tips for writing a comparison essay

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Comparing and Contrasting in an Essay | Tips & Examples

Published on August 6, 2020 by Jack Caulfield . Revised on July 23, 2023.

Comparing and contrasting is an important skill in academic writing . It involves taking two or more subjects and analyzing the differences and similarities between them.

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Table of contents

When should i compare and contrast, making effective comparisons, comparing and contrasting as a brainstorming tool, structuring your comparisons, other interesting articles, frequently asked questions about comparing and contrasting.

Many assignments will invite you to make comparisons quite explicitly, as in these prompts.

• Compare the treatment of the theme of beauty in the poetry of William Wordsworth and John Keats.
• Compare and contrast in-class and distance learning. What are the advantages and disadvantages of each approach?

Some other prompts may not directly ask you to compare and contrast, but present you with a topic where comparing and contrasting could be a good approach.

One way to approach this essay might be to contrast the situation before the Great Depression with the situation during it, to highlight how large a difference it made.

Comparing and contrasting is also used in all kinds of academic contexts where it’s not explicitly prompted. For example, a literature review involves comparing and contrasting different studies on your topic, and an argumentative essay may involve weighing up the pros and cons of different arguments.

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As the name suggests, comparing and contrasting is about identifying both similarities and differences. You might focus on contrasting quite different subjects or comparing subjects with a lot in common—but there must be some grounds for comparison in the first place.

For example, you might contrast French society before and after the French Revolution; you’d likely find many differences, but there would be a valid basis for comparison. However, if you contrasted pre-revolutionary France with Han-dynasty China, your reader might wonder why you chose to compare these two societies.

This is why it’s important to clarify the point of your comparisons by writing a focused thesis statement . Every element of an essay should serve your central argument in some way. Consider what you’re trying to accomplish with any comparisons you make, and be sure to make this clear to the reader.

Comparing and contrasting can be a useful tool to help organize your thoughts before you begin writing any type of academic text. You might use it to compare different theories and approaches you’ve encountered in your preliminary research, for example.

Let’s say your research involves the competing psychological approaches of behaviorism and cognitive psychology. You might make a table to summarize the key differences between them.

Or say you’re writing about the major global conflicts of the twentieth century. You might visualize the key similarities and differences in a Venn diagram.

These visualizations wouldn’t make it into your actual writing, so they don’t have to be very formal in terms of phrasing or presentation. The point of comparing and contrasting at this stage is to help you organize and shape your ideas to aid you in structuring your arguments.

When comparing and contrasting in an essay, there are two main ways to structure your comparisons: the alternating method and the block method.

The alternating method

In the alternating method, you structure your text according to what aspect you’re comparing. You cover both your subjects side by side in terms of a specific point of comparison. Your text is structured like this:

Mouse over the example paragraph below to see how this approach works.

One challenge teachers face is identifying and assisting students who are struggling without disrupting the rest of the class. In a traditional classroom environment, the teacher can easily identify when a student is struggling based on their demeanor in class or simply by regularly checking on students during exercises. They can then offer assistance quietly during the exercise or discuss it further after class. Meanwhile, in a Zoom-based class, the lack of physical presence makes it more difficult to pay attention to individual students’ responses and notice frustrations, and there is less flexibility to speak with students privately to offer assistance. In this case, therefore, the traditional classroom environment holds the advantage, although it appears likely that aiding students in a virtual classroom environment will become easier as the technology, and teachers’ familiarity with it, improves.

The block method

In the block method, you cover each of the overall subjects you’re comparing in a block. You say everything you have to say about your first subject, then discuss your second subject, making comparisons and contrasts back to the things you’ve already said about the first. Your text is structured like this:

• Point of comparison A
• Point of comparison B

The most commonly cited advantage of distance learning is the flexibility and accessibility it offers. Rather than being required to travel to a specific location every week (and to live near enough to feasibly do so), students can participate from anywhere with an internet connection. This allows not only for a wider geographical spread of students but for the possibility of studying while travelling. However, distance learning presents its own accessibility challenges; not all students have a stable internet connection and a computer or other device with which to participate in online classes, and less technologically literate students and teachers may struggle with the technical aspects of class participation. Furthermore, discomfort and distractions can hinder an individual student’s ability to engage with the class from home, creating divergent learning experiences for different students. Distance learning, then, seems to improve accessibility in some ways while representing a step backwards in others.

Note that these two methods can be combined; these two example paragraphs could both be part of the same essay, but it’s wise to use an essay outline to plan out which approach you’re taking in each paragraph.

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Some essay prompts include the keywords “compare” and/or “contrast.” In these cases, an essay structured around comparing and contrasting is the appropriate response.

Comparing and contrasting is also a useful approach in all kinds of academic writing : You might compare different studies in a literature review , weigh up different arguments in an argumentative essay , or consider different theoretical approaches in a theoretical framework .

Your subjects might be very different or quite similar, but it’s important that there be meaningful grounds for comparison . You can probably describe many differences between a cat and a bicycle, but there isn’t really any connection between them to justify the comparison.

You’ll have to write a thesis statement explaining the central point you want to make in your essay , so be sure to know in advance what connects your subjects and makes them worth comparing.

Comparisons in essays are generally structured in one of two ways:

• The alternating method, where you compare your subjects side by side according to one specific aspect at a time.
• The block method, where you cover each subject separately in its entirety.

It’s also possible to combine both methods, for example by writing a full paragraph on each of your topics and then a final paragraph contrasting the two according to a specific metric.

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How to Write a Compare and Contrast Essay

Written by MasterClass

Last updated: Jun 7, 2021 • 3 min read

Compare and contrast essays examine topics from multiple viewpoints. This kind of essay, often assigned in middle school and high school, teaches students about the analytical writing process and prepares them for more advanced forms of academic writing. Compare and contrast essays are relatively easy to write if you follow a simple step-by-step approach.

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How to Write a Compare and Contrast Essay

• 5-minute read
• 9th March 2021

In a compare and contrast essay , you look at the similarities and differences between two subjects. How do you write one, though? Key steps include:

• Pick two things to compare based on the assignment you were given.
• Brainstorm the similarities and differences between your chosen subjects.
• Choose a structure for your essay and plan how you will write it.
• Write up your comparison and use evidence to support your argument.
• Revise and proofread your essay to make sure it is perfect.

For more advice on each stage, check out our guide below.

1. Pick Two Subjects to Compare and Contrast

A compare and contrast assignment will ask you, unsurprisingly, to compare and contrast two things. In some cases, the assignment question will make this clear. For instance, if the assignment says “Compare how Mozart and Beethoven use melody,” you will have a very clear sense of what to write about!

Other times, you will have a choice of what to compare. In this case, you will want to pick two things that are similar enough to make a useful comparison.

For example, comparing Mozart and Beethoven makes sense because both are classical composers. This means there will be lots of points of comparison between them. But comparing Mozart to a Ferrari SF90 Stradale would just be confusing: one is a renowned composer and musician, the other is a high-end sports car, so they have very little in common that we could usefully compare.

At the same time, the things you pick should be different enough that you can find points of contrast. Were you asked to compare the calorific content of two types of fast food, for example, it might not make sense to compare hamburgers and cheeseburgers as they are too similar. But you could compare hamburgers and pizzas since both are forms of fast food but they differ in other respects.

As such, if you need to pick the subjects of your essay, read your assignment question carefully and try to find two things that will produce a helpful comparison.

2. Brainstorm Their Similarities and Differences

The next step is to brainstorm similarities and differences between your chosen subjects. You can do this as a simple list, but you could also use a Venn diagram .

This is a set of overlapping circles, each of which represents one subject. You can then add characteristics to each circle, with anything your subjects have in common going in the overlapping bit in the middle.

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Once you’ve listed characteristics, you’ll need to pick out the similarities and differences relevant to your essay. If you were assigned a question, use this to guide your choices. Otherwise, look for features that seem surprising or interesting and plan your essay around these. The key is to pick points of comparison that help us to understand each thing better, or where the similarities and differences show us something that we might not have expected or noticed otherwise.

3. Choose a Structure for Your Essay

As with any essay, you will want to start with a short introduction where you introduce your topic and what you will argue. Beyond this, most compare and contrast essays are structured in one of two ways. Decide which approach to take before you write your essay outline :

• Divide by subject – Cover each subject in turn, looking at the key features you’ve identified in the previous step. You can then include a final section where you highlight what comparing the subjects tell us.
• Divide by individual points – Break your essay down into a series of sections. Each section will then focus on one of the key features you’ve identified, explaining the similarities and differences between your chosen subjects.

For instance, if you were comparing two novels, you could write about each novel in turn and then compare them at the end. Alternatively, you could structure your essay so that each section covers an individual idea (e.g., one on structure, one on characters, one on language), looking at how each book uses these things.

In either case, you will want to end on a conclusion where you summarize what the comparison has shown us about the two subjects.

4. Use Supporting Evidence for Your Argument

It is important that you also back up your statements with supporting evidence. In some cases, this will simply involve pointing to the features of each subject that you’re discussing (e.g., citing specific parts of the novels you’re comparing).

However, you can also do extra research to back up your arguments. Were you comparing two countries’ economic performance, for example, you could use statistics from other studies or reports to show the similarities and differences.

5. Proofread Your Compare and Contrast Essay

Once you have a first draft of your compare and contrast essay, take a break. If you have time, leave it overnight. The aim is to come back to it with fresh eyes and reread it, looking for any areas you could improve. After this, you can redraft your essay to make sure your argument is clear, concise, and convincing.

It is also a good idea to have your essay proofread before submitting it. This will ensure your work is error free and help you get the marks you deserve.

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How to Write a Comparison Essay: From Similarities to Differences

Table of contents

• 1.1 What Сan I Compare and Contrast?
• 1.2 Choosing a Great Topic for a Comparison Essay
• 1.3 Education Compare and Contrast Essays Topics
• 1.4 Sports Compare and Contrast Essays Topics
• 1.5 Politics Compare and Contrast Essays Topics
• 1.6 Economy Compare and Contrast Essays Topics
• 1.7 Social Studies Compare and Contrast Essays Topics
• 1.8 History Compare and Contrast Essays Topics
• 1.9 Literature Compare and Contrast Essays Topics
• 1.10 Controversial Compare and Contrast Essay Topics
• 2.1 Thesis Statement
• 3.0.1 Understand Your Subjects:
• 3.0.2 Purpose of the Essay:
• 3.0.3 Audience Consideration:
• 3.0.4 Two Predominant Structures:
• 4.1 Comparison Essay Outline Example
• 5.1 Comparison Essay Format
• 6 Bringing It All Together

As we navigate our lives, we can’t help but notice the elements in our environment, whether it’s the latest car, a fashion trend, or even some experiences. Think about your favorite Mexican restaurant, then visit another; automatically, you’re likely to size them up to each other. So when your professors assign you homework to compare two samples in a case study, it may seem natural.

But at the college level, something happens, our natural ability to compare vacates us. You may be stuck wondering how to write a comparison essay. This is a common dilemma many students face. We’ve put together this comprehensive guide to walk you through the perfect paper’s construction steps. Below, you’ll find:

• A comprehensive guide on how to write a comparison essay, outlining its purpose, how to choose relevant topics for comparison, and the structure for presenting the content effectively.
• That the comparison essay requires the writer to analyze two objects, events, or theories and identify their similarities and differences, supporting findings with empirical data.
• For a successful comparison essay, it’s essential to choose relevant subjects, have a clear and precise thesis statement, and employ an effective structure, depending on the subjects and purpose of the essay.

So read on to learn how the pros from  Papersowl  suggest writing a compare and contrast essay.

What Is a Comparison Essay?

As it sounds, your comparative essay should analyze two objects, events, or theories and determine the similarities and differences . The overall goal of the paper is for the reader to clearly identify how the studied criteria are the same and where they diverge. In a marketing class, you may evaluate two similar products and develop a plan to demonstrate their features and benefits. Or, in a psychology class, you may have an in-depth look at two therapy techniques and then evaluate the results of a particular case study.

Your paper’s critical component is that you must ensure your findings are backed up with empirical data. While you may feel one subject is “better” than another, giving examples to prove your position is important. Information that can be weighed or measured, such as a device’s performance or the results of a process, is strong evidence to support a claim.

What Сan I Compare and Contrast?

As long as the main points make sense and the essay is comprehensive to the reader, anything can be used as a topic for a compare-and-contrast essay. It is important to remember that two principal subjects related in one way should be compared and contrasted. To help you better understand this concept, below is a table serving as a visual aid and showcasing examples of compare and contrast essay topics.

The “Good Examples” column presents two semantic subjects. They are not entirely different and, as such, leave more room for analysis. The column “Examples to improve” also contains subjects relevant to each other. However, a correlation between them is nearly impossible because they are different types of things from the same field. And the final column, “Examples to avoid,” as the name suggests, showcases some examples of topics that would not make a good compare and contrast essay.

Choosing a Great Topic for a Comparison Essay

What you write about could make or break your paper. As in any academic work, a good compare and contrast essay will have a purpose that adds value. For this, consider topics that are helpful in your discipline. Effective compare and contrast topics should expand the universe of knowledge or valid claims that have not yet been proven. A few examples of topics include:

Education Compare and Contrast Essays Topics

• Home Education vs. Daycare: What will Suit your Child?
• Spice-Cake vs. Cane: What Works Better with Kids?
• E-learning vs. Conventional Learning.
• Learning System in Asia vs. the West.
• College Dream vs. Skills Acquisition.
• Textbooks vs. E-books.
• Private vs. Public College: Which will Suit You?.
• Parents’ Involvement in Children’s Career Choice vs. Self Discovery.

Sports Compare and Contrast Essays Topics

• Football or basketball: three-pointer in the soccer goal.
• Marathons and walkathons – similar in terms of endurance, will, and fitness. However, they are also different.
• Indoor vs. In Open Air Sports.
• Sport-Study Balance vs. High Focus studying .
• Early morning Exercise vs. Late night Exercise.
• Running vs. gymming: Which one is for you?.
• Home Exercise VS Gym Workout.
• Tennis or Badminton: Which is Harder?.

Politics Compare and Contrast Essays Topics

• Democracy, Monarchy, or Autocracy
• Socialism and Communism: Is It the Same?
• Merits of free trade vs. the demerits of Free Trade
• Centralized Government Vs. Decentralized Government
• Legislature and executive – Branches of Power to analyze
• Fundamental rights Vs. State Policy’s directive principles
• Equal opportunities versus affirmative action

Economy Compare and Contrast Essays Topics

• Economics as Mandatory Discipline or as an Optional Pick
• Peace vs. political unrest.
• Economics vs. business studies: What’s More Efficient?
• Regulated Prices vs. Free Market
• America Tax System vs. China Tax System
• New Laws vs Old Laws: Which is More Important
• Macro-Economics vs. Micro-Economics.

Social Studies Compare and Contrast Essays Topics

• Childhood in the 90s vs. Modern Day Childhood
• Coronavirus vs. The Great Depression
• COVID-19 vs. The Plague
• Common-Law Vs. Civil Law
• Rural Life to Urban Life
• America in the 60s Vs. America Now

History Compare and Contrast Essays Topics

• Lincoln’s Ideas vs. Washington’s ideas
• Baroque epoch vs. Renaissance
• Religious studies vs. Anthropology: Are They So Different?
• Napoleon Fall vs. Hitler Fall
• Democracy and monarchy
• The US and the UK Election System
• Nazism vs. Fascism: Is It the Same?

Literature Compare and Contrast Essays Topics

• Reality vs. Fiction Literature
• Depiction of Women in Literature in the 80s and Now
• Memoir vs. Autobiography
• Prose versus Poetry
• Shakespeare Piece: Othello vs. Hamlet
• English novels vs. French novels.
• Roman and Greek mythology.

Controversial Compare and Contrast Essay Topics

We believe that controversial compare-and-contrast essays are the most interesting ones. They include two opposite beliefs on the same question or situation and analyze their similarity or different points. It’s the most exciting essay type to write and overwhelming to read, so look at the list of top-rated topics for such articles:

• Intervention or Invasion: What is the Difference?
• Religion versus Atheism.
• LGBT++ Rights vs. Sexual Orientation Restriction.
• Death Penalty vs. Life Sentence: What is Worse?
• Climate Change vs. War: There Is Connection?
• Violent video games and Shooting games.

In addition to these academic subjects, you may be tasked to write a good application comparison essay when entering college. These topics could be more light-hearted and include comparing your youth with your adolescent years or comparing two close friends.

Pre-Writing Stage

The pre-writing stage is an indispensable phase in the essay-writing process, laying the foundation for a well-organized and insightful piece. Before diving into the actual writing, this preparatory stage allows you to explore, organize, and refine their thoughts. For compare and contrast essays, this often involves researching the chosen subjects to uncover detailed information, nuances, and perspectives. Techniques such as brainstorming can help identify key points of similarity and difference, while tools like Venn diagrams visually map out where subjects overlap and where they diverge. This visual representation can be particularly invaluable in determining the essay’s structure and focus. Additionally, the pre-writing stage is an opportune time to formulate a tentative thesis statement, which will provide direction and purpose as the essay evolves. By dedicating time to this initial phase, writers can ensure a clearer, more coherent essay, minimizing potential roadblocks and revisions later in the writing process. In essence, the pre-writing is akin to blueprinting; it’s where the groundwork is laid for the construction of a compelling narrative.

Thesis Statement

The thesis statement is the anchor of any well-structured essay, offering readers a concise snapshot of what to expect. In a compare and contrast essay, the thesis not only indicates the subjects to be compared but also the focus and purpose of the comparison. Begin by pinpointing the main similarities or differences you want to highlight. For instance, if comparing apples to oranges, your thesis might read: “While apples and oranges both provide essential vitamins and are popular fruits, they differ in texture, taste, and cultural significance.” This statement not only sets the subjects of comparison but also guides readers on the specific aspects being compared.

Crafting an effective thesis requires clarity and precision. It should avoid vague language and ensure that readers can anticipate the direction of the discussion. Remember, a strong thesis statement acts as a roadmap, helping to steer both the writer and the reader through the essay’s argumentative landscape.

Structure for a Compare and Contrast Essay

When setting out to write a compare and contrast essay, one of the initial and fundamental decisions you’ll need to make is regarding the essay’s structure. Your choice of structure can have a profound impact on the clarity and effectiveness of your presentation. Here’s how you can determine the best structure for your essay:

Understand Your Subjects:

• Before choosing a structure, you need a clear understanding of your subjects and the points of comparison. Are there numerous similarities and differences, or just a few major ones?

Purpose of the Essay:

• Are you trying to highlight the stark differences between your subjects, shed light on unexpected similarities, or do both? Your purpose can guide the structure.

Audience Consideration:

• Think about your readers. If your subjects are very unfamiliar to your audience, the block method might be better because it allows for a more in-depth exploration of each subject before contrasting.

Two Predominant Structures:

• Block Method:  In this structure, you discuss all relevant points related to one subject and then move on to the next subject. This approach can be particularly useful if you want your readers to have an in-depth understanding of each subject before highlighting the contrasts.

✏️ Example:  If you’re comparing apples and oranges, you would first discuss everything about apples and then everything about oranges.

• Point-by-Point Method:  This is a more integrated approach. For each point of comparison, you alternate between the two subjects. This method keeps the comparison and contrast front and center and can make direct contrasts clearer.

✏️ Example:  Discuss the color of apples and then the color of oranges, followed by the texture of apples and then the texture of oranges, and so on.

Whichever structure you choose, your primary goal should be clarity. Ensure that your points of comparison are clear and that readers can easily follow your reasoning. Remember, while these are the two primary structures, they are not set in stone. Depending on your topic, you might find it effective to blend these structures in some sections.

In conclusion, the structure you choose for your compare and contrast essay will significantly shape your argument’s presentation. While the block method allows for a deep dive into each subject separately, the point-by-point method maintains a tight focus on the comparison throughout the essay. Evaluate your subjects, your purpose, and your audience, and choose the structure that most effectively communicates your points.

Compare and Contrast Essay Outline

A good essay outline will contain, at a minimum, the three core sections – introduction, body, and conclusion. Often times the intro can be the most difficult to write, and it should be reserved for last. Once you have all your ideas laid out, hammering out a solid beginning is much easier to inform the reader what is to follow. You can pick out an interesting fact in your paper to write a strong hook to lure your readers in. Also, you’ll be able to tighten up your compare-and-contrast thesis to give a stronger impression.

Comparison Essay Outline Example

In this example, we’ll compare and contrast the essay point by point. In our comparison essay structure, we’ve elected to speak about similarities and follow up with differences and apply an extended conclusion with analysis and then the actual concluding paragraph for the scope of the paper.

In our comparative essay outline example, we’ve put together a basic template of what the paper should look like. Mind you, this is an informal template for an introduction to compare and contrast essay. If your course requires you to submit a formal outline in APA or MLA style, be sure to draft one according to the latest style guide.

You can use this comparative essay outline template to draft your paper as a means to get your ideas out on paper. Like many students, you could be short on time or not have the ability to complete your paper. In this case, you can use our writing service, and we’ll draft a perfect custom text for you to meet any deadlines you have.

We all have our opinions and curiosities, and sharing them with the world is a fun experience. And you can through an effective contrast and comparison paper. Just be sure to pick subjects that can be analyzed and back up your conclusions with data, and you’ll be well on your way to unlocking the world’s inner workings. Sometimes you may find a lack of inspiration for a topic or are stressed to get a high grade. We are here to help 24/7/365 to get you out of a jam and write your papers for you in your time of need. So reach out to us, and we are here to help.

Tips to Write a Compare and Contrast Essay

If you’re wondering how to write a comparison essay fast, there are a few tricks to make the most of your time. Follow these steps professional writers use, and you’ll get your paper done to meet the tightest deadlines.

• Brainstorm on a scratch pad : You may be used to using your computer for everything, but for organizing your ideas, old-fashioned scratch paper works best. Draw a side-by-side chart and start listing out the characteristics of your subjects. Mention all the pros and cons, physical characteristics, as well as processes and applications that each possesses.
• Make sure to choose comparable subjects that will make sense to the reader.
• Ensure that the thesis statement is strong and to the point.
• Do good research and ensure that your arguments are clearly stated.
• Build your outline of compare and contrast essay : You can start to compare and contrast essay outline with your data table. Check the required length of your paper and start building a paragraph structure that will meet any bullet points and suffice the word count. Be sure to start off with your most interesting points to keep the reader engaged.
• Draft your paper : Be sure to include a catchy title that is on point with the contents of your work. As a general rule, try not to go over 12 words in your title. Also, note that the thesis statement for the comparison and contrast essay should relate to every section of your text.
• Use  transitional words to make it easier for the reader to follow the arguments presented in your essay.

Transitional words and phrases are the connective tissues of an essay, ensuring the flow of ideas is seamless and readers can easily navigate the content. Especially crucial in compare and contrast essays, these transitions aid in clarifying comparisons or highlighting disparities. Words like “similarly,” “likewise,” and “equally” signal similarities between subjects, guiding the reader’s understanding of how two things align. Conversely, phrases such as “on the other hand,” “however,” and “in contrast” denote differences, emphasizing the distinct characteristics of each subject.

• Review your work : Now, it’s time to smooth out some rough patches in your initial draft and fine-tune some sections. Pay special attention to retaining your paper’s focus and meeting all the task requirements. Many students get stuck in this phase and, while they’ve met the requirements, are not happy with the final product. In this case, a comparison essay to buy is a great alternative. Hiring a specialist in your subject is the best way to get a good grade.

There are various factors to consider, such as structure, format, and even finding the right resources. Fortunately, cheap essay writing services such as PapersOwl make the process much easier. Simply provide your instructions, and their professional writers will create an original paper for you.

Comparison Essay Format

Universities are real sticklers for formatting. This may seem like an annoyance for many students, but academic work should be consistent across disciplines to aid analysts in efficiently referencing work and applying it to their own studies. Depending on your course, you may be required to write a comparison essay in MLA format or APA. So armed with the latest style guide of your choice, let’s get down to how to write a good comparison essay outline.

Bringing It All Together

Comparing and contrasting is an intrinsic part of our daily decision-making. From choosing restaurants to assessing products, we inherently evaluate based on similarities and differences. Yet, when tasked with a formal compare and contrast essay in academia, many students falter. This guide aims to simplify the process, providing structure and clarity. Emphasizing the importance of a solid thesis, structured format, and the use of transitional phrases, it offers a blueprint for effective essay writing.

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Mentor Texts

Writing Comparative Essays: Making Connections to Illuminate Ideas

Breathing new life into a familiar school format, with the help of Times journalism and several winning student essays.

By Katherine Schulten

Our new Mentor Text series spotlights writing from The Times and from our student contests that teenagers can learn from and emulate.

This entry aims to help support those participating in our Third Annual Connections Contest , in which students are invited to take something they are studying in school and show us, via parallels found in a Times article, how it connects to our world today. In other words, we’re asking them to compare ideas in two texts.

For even more on how to help your students make those kinds of connections, please see our related writing unit .

I. Overview

Making connections is a natural part of thinking. We can’t help doing it. If you’re telling a friend about a new song or restaurant or TV show you like, you’ll almost always find yourself saying, “It’s like _________” and referencing something you both know. It’s a simple way of helping your listener get his or her bearings.

Journalists do it too. In fact, it’s one of the main tools of the trade to help explain a new concept or reframe an old one. Here are just a few recent examples:

A science reporter explains the behavior of fossilized marine animals by likening them to humans making conga lines.

A sportswriter describes the current N.B.A. season by framing it in terms of Broadway show tunes.

An Op-Ed contributor compares today’s mainstreaming of contemporary African art to “an urban neighborhood undergoing gentrification.”

Sometimes a journalist will go beyond making a simple analogy and devote a whole piece to an extended comparison between two things. Articles like these are real-world cousins of that classic compare/contrast essay you’ve probably been writing in school since you could first hold a pen.

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10.7 Comparison and Contrast

Learning objectives.

• Determine the purpose and structure of comparison and contrast in writing.
• Explain organizational methods used when comparing and contrasting.
• Understand how to write a compare-and-contrast essay.

The Purpose of Comparison and Contrast in Writing

Comparison in writing discusses elements that are similar, while contrast in writing discusses elements that are different. A compare-and-contrast essay , then, analyzes two subjects by comparing them, contrasting them, or both.

The key to a good compare-and-contrast essay is to choose two or more subjects that connect in a meaningful way. The purpose of conducting the comparison or contrast is not to state the obvious but rather to illuminate subtle differences or unexpected similarities. For example, if you wanted to focus on contrasting two subjects you would not pick apples and oranges; rather, you might choose to compare and contrast two types of oranges or two types of apples to highlight subtle differences. For example, Red Delicious apples are sweet, while Granny Smiths are tart and acidic. Drawing distinctions between elements in a similar category will increase the audience’s understanding of that category, which is the purpose of the compare-and-contrast essay.

Similarly, to focus on comparison, choose two subjects that seem at first to be unrelated. For a comparison essay, you likely would not choose two apples or two oranges because they share so many of the same properties already. Rather, you might try to compare how apples and oranges are quite similar. The more divergent the two subjects initially seem, the more interesting a comparison essay will be.

Writing at Work

Comparing and contrasting is also an evaluative tool. In order to make accurate evaluations about a given topic, you must first know the critical points of similarity and difference. Comparing and contrasting is a primary tool for many workplace assessments. You have likely compared and contrasted yourself to other colleagues. Employee advancements, pay raises, hiring, and firing are typically conducted using comparison and contrast. Comparison and contrast could be used to evaluate companies, departments, or individuals.

Brainstorm an essay that leans toward contrast. Choose one of the following three categories. Pick two examples from each. Then come up with one similarity and three differences between the examples.

• Romantic comedies
• Internet search engines
• Cell phones

Brainstorm an essay that leans toward comparison. Choose one of the following three items. Then come up with one difference and three similarities.

• Department stores and discount retail stores
• Fast food chains and fine dining restaurants
• Dogs and cats

The Structure of a Comparison and Contrast Essay

The compare-and-contrast essay starts with a thesis that clearly states the two subjects that are to be compared, contrasted, or both and the reason for doing so. The thesis could lean more toward comparing, contrasting, or both. Remember, the point of comparing and contrasting is to provide useful knowledge to the reader. Take the following thesis as an example that leans more toward contrasting.

Thesis statement: Organic vegetables may cost more than those that are conventionally grown, but when put to the test, they are definitely worth every extra penny.

Here the thesis sets up the two subjects to be compared and contrasted (organic versus conventional vegetables), and it makes a claim about the results that might prove useful to the reader.

You may organize compare-and-contrast essays in one of the following two ways:

• According to the subjects themselves, discussing one then the other
• According to individual points, discussing each subject in relation to each point

See Figure 10.1 “Comparison and Contrast Diagram” , which diagrams the ways to organize our organic versus conventional vegetables thesis.

Figure 10.1 Comparison and Contrast Diagram

The organizational structure you choose depends on the nature of the topic, your purpose, and your audience.

Given that compare-and-contrast essays analyze the relationship between two subjects, it is helpful to have some phrases on hand that will cue the reader to such analysis. See Table 10.3 “Phrases of Comparison and Contrast” for examples.

Table 10.3 Phrases of Comparison and Contrast

Create an outline for each of the items you chose in Note 10.72 “Exercise 1” and Note 10.73 “Exercise 2” . Use the point-by-point organizing strategy for one of them, and use the subject organizing strategy for the other.

Writing a Comparison and Contrast Essay

First choose whether you want to compare seemingly disparate subjects, contrast seemingly similar subjects, or compare and contrast subjects. Once you have decided on a topic, introduce it with an engaging opening paragraph. Your thesis should come at the end of the introduction, and it should establish the subjects you will compare, contrast, or both as well as state what can be learned from doing so.

The body of the essay can be organized in one of two ways: by subject or by individual points. The organizing strategy that you choose will depend on, as always, your audience and your purpose. You may also consider your particular approach to the subjects as well as the nature of the subjects themselves; some subjects might better lend themselves to one structure or the other. Make sure to use comparison and contrast phrases to cue the reader to the ways in which you are analyzing the relationship between the subjects.

After you finish analyzing the subjects, write a conclusion that summarizes the main points of the essay and reinforces your thesis. See Chapter 15 “Readings: Examples of Essays” to read a sample compare-and-contrast essay.

Many business presentations are conducted using comparison and contrast. The organizing strategies—by subject or individual points—could also be used for organizing a presentation. Keep this in mind as a way of organizing your content the next time you or a colleague have to present something at work.

Choose one of the outlines you created in Note 10.75 “Exercise 3” , and write a full compare-and-contrast essay. Be sure to include an engaging introduction, a clear thesis, well-defined and detailed paragraphs, and a fitting conclusion that ties everything together.

Key Takeaways

• A compare-and-contrast essay analyzes two subjects by either comparing them, contrasting them, or both.
• The purpose of writing a comparison or contrast essay is not to state the obvious but rather to illuminate subtle differences or unexpected similarities between two subjects.
• The thesis should clearly state the subjects that are to be compared, contrasted, or both, and it should state what is to be learned from doing so.

There are two main organizing strategies for compare-and-contrast essays.

• Organize by the subjects themselves, one then the other.
• Organize by individual points, in which you discuss each subject in relation to each point.
• Use phrases of comparison or phrases of contrast to signal to readers how exactly the two subjects are being analyzed.

Writing for Success Copyright © 2015 by University of Minnesota is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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How to Write a Comparative Essay

Last Updated: May 19, 2023 Fact Checked

This article was co-authored by Christopher Taylor, PhD . Christopher Taylor is an Adjunct Assistant Professor of English at Austin Community College in Texas. He received his PhD in English Literature and Medieval Studies from the University of Texas at Austin in 2014. There are 8 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 1,685,410 times.

Perhaps you have been assigned a comparative essay in class, or need to write a comprehensive comparative report for work. In order to write a stellar comparative essay, you have to start off by picking two subjects that have enough similarities and differences to be compared in a meaningful way, such as two sports teams or two systems of government. Once you have that, then you have to find at least two or three points of comparison and use research, facts, and well-organized paragraphs to impress and captivate your readers. Writing the comparative essay is an important skill that you will use many times throughout your scholastic career.

Comparative Essay Outline and Example

How to Develop the Essay Content

• Many comparative essay assignments will signal their purpose by using words such as "compare," "contrast," "similarities," and "differences" in the language of the prompt.
• Also see whether there are any limits placed on your topic.

• The assignment will generally ask guiding questions if you are expected to incorporate comparison as part of a larger assignment. For example: "Choose a particular idea or theme, such as love, beauty, death, or time, and consider how two different Renaissance poets approach this idea." This sentence asks you to compare two poets, but it also asks how the poets approach the point of comparison. In other words, you will need to make an evaluative or analytical argument about those approaches.
• If you're unclear on what the essay prompt is asking you to do, talk with your instructor. It's much better to clarify questions up front than discover you've written the entire essay incorrectly.

• The best place to start is to write a list of things that the items you are comparing have in common as well as differences between them. [3] X Research source

• You may want to develop a system such as highlighting different types of similarities in different colors, or use different colours if you are using an electronic device.
• For example, if you are comparing two novels, you may want to highlight similarities in characters in pink, settings in blue, and themes or messages in green.

• The basis for your comparison may be assigned to you. Be sure to check your assignment or prompt.
• A basis for comparison may have to do with a theme, characteristics, or details about two different things. [7] X Research source
• A basis for comparison may also be known as the “grounds” for comparison or a frame of reference.
• Keep in mind that comparing 2 things that are too similar makes it hard to write an effective paper. The goal of a comparison paper is to draw interesting parallels and help the reader realize something interesting about our world. This means your subjects must be different enough to make your argument interesting.

• Research may not be required or appropriate for your particular assignment. If your comparative essay is not meant to include research, you should avoid including it.
• A comparative essay about historical events, social issues, or science-related topics are more likely to require research, while a comparison of two works of literature are less likely to require research.
• Be sure to cite any research data properly according to the discipline in which you are writing (eg, MLA, APA, or Chicago format).

• Your thesis needs to make a claim about your subjects that you will then defend in your essay. It's good for this claim to be a bit controversial or up for interpretation, as this allows you to build a good argument.

How to Organize the Content

• Use a traditional outline form if you would like to, but even a simple list of bulleted points in the order that you plan to present them would help.
• You can also write down your main points on sticky notes (or type them, print them, and then cut them out) so that you can arrange and rearrange them before deciding on a final order.

• The advantages of this structure are that it continually keeps the comparison in the mind of the reader and forces you, the writer, to pay equal attention to each side of the argument.
• This method is especially recommended for lengthy essays or complicated subjects where both the writer and reader can easily become lost. For Example: Paragraph 1: Engine power of vehicle X / Engine power of vehicle Y Paragraph 2: Stylishness of vehicle X / Stylishness of vehicle Y Paragraph 3: Safety rating of vehicle X / Safety rating of vehicle Y

• The advantages of this structure are that it allows you to discuss points in greater detail and makes it less jarring to tackle two topics that radically different.
• This method is especially recommended for essays where some depth and detail are required. For example: Paragraph 1: Engine power of vehicle X Paragraph 2: Engine power of vehicle Y Paragraph 3: Stylishness of vehicle X Paragraph 4: Stylishness of vehicle Y Paragraph 5: Safety rating of vehicle X Paragraph 6: Safety rating of vehicle Y

• This method is by far the most dangerous, as your comparison can become both one-sided and difficult for the reader to follow.
• This method is only recommended for short essays with simplistic subjects that the reader can easily remember as (s)he goes along. For example: Paragraph 1: Engine power of vehicle X Paragraph 2: Stylishness of vehicle X Paragraph 3: Safety rating of vehicle X Paragraph 4: Engine power of vehicle Y Paragraph 5: Stylishness of vehicle Y Paragraph 6: Safety rating of vehicle Y

How to Write the Essay

• Body paragraphs first . Work through all that information you've been compiling and see what kind of story it tells you. Only when you've worked with your data will you know what the larger point of the paper is.
• Conclusion second . Now that you've done all the heavy lifting, the point of your essay should be fresh in your mind. Strike while the iron’s hot. Start your conclusion with a restatement of your thesis.
• Intro last . Open your introduction with a "hook" to grab the reader's attention. Since you've already written your essay, choose a hook that reflects what you will talk about, whether it's a quote, statistic, factoid, rhetorical question, or anecdote. Then, write 1-2 sentences about your topic, narrowing down to your thesis statement, which completes your introduction.

• Organize your paragraphs using one of the approaches listed in the "Organizing the Content" part below. Once you have defined your points of comparison, choose the structure for the body paragraphs (where your comparisons go) that makes the most sense for your data. To work out all the organizational kinks, it’s recommended that you write an outline as a placeholder.
• Be very careful not to address different aspects of each subject. Comparing the color of one thing to the size of another does nothing to help the reader understand how they stack up. [15] X Research source

• Be aware that your various comparisons won’t necessarily lend themselves to an obvious conclusion, especially because people value things differently. If necessary, make the parameters of your argument more specific. (Ex. “Though X is more stylish and powerful, Y’s top safety ratings make it a more appropriate family vehicle .”)
• When you have two radically different topics, it sometimes helps to point out one similarity they have before concluding. (i.e. "Although X and Y don't seem to have anything in common, in actuality, they both ....”)

• Even the best writers know editing is important to produce a good piece. Your essay will not be your best effort unless you revise it.
• If possible, find a friend to look over the essay, as he or she may find problems that you missed.
• It sometimes helps to increase or decrease the font size while editing to change the visual layout of the paper. Looking at the same thing for too long makes your brain fill in what it expects instead of what it sees, leaving you more likely to overlook errors.

Expert Q&A

• The title and introduction really catch the reader's attention and make them read the essay. Make sure you know how to write a catchy essay title . Thanks Helpful 6 Not Helpful 1
• Quotes should be used sparingly and must thoroughly complement the point they are being used to exemplify/justify. Thanks Helpful 5 Not Helpful 2
• The key principle to remember in a comparative paragraph or essay is that you must clarify precisely what you are comparing and keep that comparison alive throughout the essay. Thanks Helpful 3 Not Helpful 2

• Avoid vague language such as "people," "stuff," "things," etc. Thanks Helpful 4 Not Helpful 0
• Avoid, at all costs, the conclusion that the two subjects are "similar, yet different." This commonly found conclusion weakens any comparative essay, because it essentially says nothing about the comparison. Most things are "similar, yet different" in some way. Thanks Helpful 4 Not Helpful 0
• Some believe that an "unbalanced" comparison - that is, when the essay focuses predominantly on one of the two issues, and gives less importance to the other - is weaker, and that writers should strive for 50/50 treatment of the texts or issues being examined. Others, however, value emphasis in the essay that reflects the particular demands of the essay's purpose or thesis. One text may simply provide context, or historical/artistic/political reference for the main text, and therefore need not occupy half of the essay's discussion or analysis. A "weak" essay in this context would strive to treat unequal texts equally, rather than strive to appropriately apportion space to the relevant text. Thanks Helpful 3 Not Helpful 0
• Beware of the "Frying Pan Conclusion" in which you simply recount everything that was said in the main body of the essay. While your conclusion should include a simple summary of your argument, it should also emphatically state the point in a new and convincing way, one which the reader will remember clearly. If you can see a way forward from a problem or dilemma, include that as well. Thanks Helpful 2 Not Helpful 1

You Might Also Like

• ↑ http://writingcenter.unc.edu/handouts/comparing-and-contrasting/
• ↑ http://www.writing.utoronto.ca/advice/specific-types-of-writing/comparative-essay
• ↑ https://writingcenter.unc.edu/tips-and-tools/comparing-and-contrasting/
• ↑ http://writingcenter.fas.harvard.edu/pages/how-write-comparative-analysis
• ↑ https://www.butte.edu/departments/cas/tipsheets/style_purpose_strategy/compare_contrast.html
• ↑ https://open.lib.umn.edu/writingforsuccess/chapter/10-7-comparison-and-contrast/
• ↑ https://owl.purdue.edu/owl/general_writing/the_writing_process/proofreading/steps_for_revising.html
• How to Structure Paragraphs in an Essay

About This Article

To write a comparative essay, start by writing an introduction that introduces the 2 subjects you'll be comparing. You should also include your thesis statement in the introduction, which should state what you've concluded based on your comparisons. Next, write the body of your essay so that each paragraph focuses on one point of comparison between your subjects. Finally, write a conclusion that summarizes your main points and draws a larger conclusion about the two things you compared. To learn how to do research for your essay, read on! Did this summary help you? Yes No

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• Writing for Success: Compare/Contrast

LEARNING OBJECTIVES

This section will help you determine the purpose and structure of comparison/contrast in writing.

The Purpose of Compare/Contrast in Writing

Comparison in writing discusses elements that are similar, while contrast in writing discusses elements that are different. A compare-and-contrast essay, then, analyzes two subjects by comparing them, contrasting them, or both.

The key to a good compare-and-contrast essay is to choose two or more subjects that connect in a meaningful way. The purpose of conducting the comparison or contrast is not to state the obvious but rather to illuminate subtle differences or unexpected similarities. For example, if you wanted to focus on contrasting two subjects you would not pick apples and oranges; rather, you might choose to compare and contrast two types of oranges or two types of apples to highlight subtle differences. For example, Red Delicious apples are sweet, while Granny Smiths are tart and acidic. Drawing distinctions between elements in a similar category will increase the audience’s understanding of that category, which is the purpose of the compare-and-contrast essay.

Similarly, to focus on comparison, choose two subjects that seem at first to be unrelated. For a comparison essay, you likely would not choose two apples or two oranges because they share so many of the same properties already. Rather, you might try to compare how apples and oranges are quite similar. The more divergent the two subjects initially seem, the more interesting a comparison essay will be.

The Structure of a Compare/Contrast Essay

The compare-and-contrast essay starts with a thesis that clearly states the two subjects that are to be compared, contrasted, or both and the reason for doing so. The thesis could lean more toward comparing, contrasting, or both. Remember, the point of comparing and contrasting is to provide useful knowledge to the reader. Take the following thesis as an example that leans more toward contrasting:

Thesis Statement: Organic vegetables may cost more than those that are conventionally grown, but when put to the test, they are definitely worth every extra penny.

Here the thesis sets up the two subjects to be compared and contrasted (organic versus conventional vegetables), and it makes a claim about the results that might prove useful to the reader.

You may organize compare-and-contrast essays in one of the following two ways:

• According to the subjects themselves, discussing one then the other
• According to individual points, discussing each subject in relation to each point

The organizational structure you choose depends on the nature of the topic, your purpose, and your audience.

Given that compare-and-contrast essays analyze the relationship between two subjects, it is helpful to have some phrases on hand that will cue the reader to such analysis.

Phrases of Comparison and Contrast

Writing an Compare/Contrast Essay

First choose whether you want to compare seemingly disparate subjects, contrast seemingly similar subjects, or compare and contrast subjects. Once you have decided on a topic, introduce it with an engaging opening paragraph. Your thesis should come at the end of the introduction, and it should establish the subjects you will compare, contrast, or both as well as state what can be learned from doing so.

The body of the essay can be organized in one of two ways: by subject or by individual points. The organizing strategy that you choose will depend on, as always, your audience and your purpose. You may also consider your particular approach to the subjects as well as the nature of the subjects themselves; some subjects might better lend themselves to one structure or the other. Make sure to use comparison and contrast phrases to cue the reader to the ways in which you are analyzing the relationship between the subjects.

After you finish analyzing the subjects, write a conclusion that summarizes the main points of the essay and reinforces your thesis.

Compare/Contrast Essay Example

Comparing and Contrasting London and Washington, DC

By Scott McLean in Writing for Success

Both Washington, DC, and London are capital cities of English-speaking countries, and yet they offer vastly different experiences to their residents and visitors. Comparing and contrasting the two cities based on their history, their culture, and their residents show how different and similar the two are.

Both cities are rich in world and national history, though they developed on very different time lines. London, for example, has a history that dates back over two thousand years. It was part of the Roman Empire and known by the similar name, Londinium. It was not only one of the northernmost points of the Roman Empire but also the epicenter of the British Empire where it held significant global influence from the early sixteenth century on through the early twentieth century. Washington, DC, on the other hand, has only formally existed since the late eighteenth century. Though Native Americans inhabited the land several thousand years earlier, and settlers inhabited the land as early as the sixteenth century, the city did not become the capital of the United States until the 1790s. From that point onward to today, however, Washington, DC, has increasingly maintained significant global influence. Even though both cities have different histories, they have both held, and continue to hold, significant social influence in the economic and cultural global spheres.

Both Washington, DC, and London offer a wide array of museums that harbor many of the world’s most prized treasures. While Washington, DC, has the National Gallery of Art and several other Smithsonian galleries, London’s art scene and galleries have a definite edge in this category. From the Tate Modern to the British National Gallery, London’s art ranks among the world’s best. This difference and advantage has much to do with London and Britain’s historical depth compared to that of the United States. London has a much richer past than Washington, DC, and consequently has a lot more material to pull from when arranging its collections. Both cities have thriving theater districts, but again, London wins this comparison, too, both in quantity and quality of theater choices. With regard to other cultural places like restaurants, pubs, and bars, both cities are very comparable. Both have a wide selection of expensive, elegant restaurants as well as a similar amount of global and national chains. While London may be better known for its pubs and taste in beer, DC offers a different bar-going experience. With clubs and pubs that tend to stay open later than their British counterparts, the DC night life tend to be less reserved overall.

Both cities also share and differ in cultural diversity and cost of living. Both cities share a very expensive cost of living—both in terms of housing and shopping. A downtown one-bedroom apartment in DC can easily cost $1,800 per month, and a similar “flat” in London may double that amount. These high costs create socioeconomic disparity among the residents. Although both cities’ residents are predominantly wealthy, both have a significantly large population of poor and homeless. Perhaps the most significant difference between the resident demographics is the racial makeup. Washington, DC, is a “minority majority” city, which means the majority of its citizens are races other than white. In 2009, according to the US Census, 55 percent of DC residents were classified as “Black or African American” and 35 percent of its residents were classified as “white.” London, by contrast, has very few minorities—in 2006, 70 percent of its population was “white,” while only 10 percent was “black.” The racial demographic differences between the cities is drastic.

Even though Washington, DC, and London are major capital cities of English-speaking countries in the Western world, they have many differences along with their similarities. They have vastly different histories, art cultures, and racial demographics, but they remain similar in their cost of living and socioeconomic disparity.

KEY TAKEAWAYS

• A compare-and-contrast essay analyzes two subjects by either comparing them, contrasting them, or both.
• The purpose of writing a comparison or contrast essay is not to state the obvious but rather to illuminate subtle differences or unexpected similarities between two subjects.
• The thesis should clearly state the subjects that are to be compared, contrasted, or both, and it should state what is to be learned from doing so.
• There are two main organizing strategies for compare-and-contrast essays.
• Organize by the subjects themselves, one then the other.
• Organize by individual points, in which you discuss each subject in relation to each point.
• Use phrases of comparison or phrases of contrast to signal to readers how exactly the two subjects are being analyzed.
• Provided by : Lumen Learning. Located at : http://lumenlearning.com/ . License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• Successful Writing. Provided by : Anonymous. Located at : http://2012books.lardbucket.org/books/successful-writing/s14-07-comparison-and-contrast.html . License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• Comparing and Contrasting London and Washington, DC. Authored by : Scott McLean. Located at : http://2012books.lardbucket.org/books/successful-writing/s14-07-comparison-and-contrast.html . License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• Table of Contents

Instructor Resources (Access Requires Login)

• Overview of Instructor Resources

An Overview of the Writing Process

• Introduction to the Writing Process
• Introduction to Writing
• Your Role as a Learner
• What is an Essay?
• Reading to Write
• Defining the Writing Process
• Videos: Prewriting Techniques
• Thesis Statements
• Organizing an Essay
• Creating Paragraphs
• Conclusions
• Editing and Proofreading
• Matters of Grammar, Mechanics, and Style
• Peer Review Checklist
• Comparative Chart of Writing Strategies

Using Sources

• Quoting, Paraphrasing, and Avoiding Plagiarism
• Formatting the Works Cited Page (MLA)
• Citing Paraphrases and Summaries (APA)
• APA Citation Style, 6th edition: General Style Guidelines

Definition Essay

• Definitional Argument Essay
• How to Write a Definition Essay
• Critical Thinking
• Video: Thesis Explained
• Effective Thesis Statements
• Student Sample: Definition Essay

Narrative Essay

• Introduction to Narrative Essay
• Student Sample: Narrative Essay
• "Shooting an Elephant" by George Orwell
• "Sixty-nine Cents" by Gary Shteyngart
• Video: The Danger of a Single Story
• How to Write an Annotation
• How to Write a Summary
• Writing for Success: Narration

Illustration/Example Essay

• Introduction to Illustration/Example Essay
• "She's Your Basic L.O.L. in N.A.D" by Perri Klass
• "April & Paris" by David Sedaris
• Writing for Success: Illustration/Example
• Student Sample: Illustration/Example Essay

Compare/Contrast Essay

• Introduction to Compare/Contrast Essay
• "Disability" by Nancy Mairs
• "Friending, Ancient or Otherwise" by Alex Wright
• "A South African Storm" by Allison Howard
• Student Sample: Compare/Contrast Essay

Cause-and-Effect Essay

• Introduction to Cause-and-Effect Essay
• "Cultural Baggage" by Barbara Ehrenreich
• "Women in Science" by K.C. Cole
• Writing for Success: Cause and Effect
• Student Sample: Cause-and-Effect Essay

Argument Essay

• Introduction to Argument Essay
• Rogerian Argument
• "The Case Against Torture," by Alisa Soloman
• "The Case for Torture" by Michael Levin
• How to Write a Summary by Paraphrasing Source Material
• Writing for Success: Argument
• Student Sample: Argument Essay
• Grammar/Mechanics Mini-lessons
• Mini-lesson: Subjects and Verbs, Irregular Verbs, Subject Verb Agreement
• Mini-lesson: Sentence Types
• Mini-lesson: Fragments I
• Mini-lesson: Run-ons and Comma Splices I
• Mini-lesson: Comma Usage
• Mini-lesson: Parallelism
• Mini-lesson: The Apostrophe
• Mini-lesson: Capital Letters
• Grammar Practice - Interactive Quizzes
• De Copia - Demonstration of the Variety of Language
• Style Exercise: Voice

Compare And Contrast Essay

Compare and Contrast Essay - An Ultimate Guide

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Published on: Feb 18, 2020

Last updated on: Mar 12, 2024

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Are you a student facing the challenge of writing a compare and contrast essay? 

This type of essay can be challenging, as it requires them to evaluate, analyze, and differentiate between various subjects. However, don't let this task intimidate you! 

In this blog, we will provide you with a step-by-step process for writing a compare and contrast essay. Our expert advice and practical tips will help you gain the confidence and skills needed to craft a compelling and well-organized essay.

So, let's get started!

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What is Compare and Contrast Essay?

According to the compare and contrast essay definition it is written to observe and evaluate the similarities and differences between two objects or subjects.

We compare things in our daily life to make choices. Hypothetically, if a person has a limited budget and goes shopping, he would compare things and make choices that will best suit him. 

To write a compare and contrast essay, you can combine two things, compare them, and form a claim.

Paper Due? Why Suffer? That's our Job!

Purpose of a Compare and Contrast Essay

The purpose of the compare and contrast essay is:

• To analyze similarities and differences between two or more subjects
• To showcase your ability to critically examine and evaluate different aspects of the subjects
• To enhance your analytical and critical thinking skills
• To demonstrate your understanding of the subjects and their characteristics
• To provide insights and draw meaningful conclusions from the comparisons
• To engage readers by presenting thought-provoking comparisons and contrasts
• To fulfill academic requirements and demonstrate your knowledge on the given topic.

A successful comparison paper will provide facts about both the subjects that the essay is about.

Want to learn more about this type of essay? Check out this informative video!

Types of Compare and Contrast Essay

When it comes to writing a compare and contrast essay, there are several types you can choose from. Each type has its unique approach and structure that will help you present your ideas effectively. 

Here are the most common types of compare and contrast essays.

Point-by-Point Comparison

The point-by-point comparison, also known as the alternating method, is where you compare and contrast the two subjects point by point. This method is effective when the subjects being compared have several similarities and differences. 

With this method, you can easily show how the two subjects are similar or different on a specific aspect. For instance, if you were comparing two cities, you can compare their climate, transportation, and lifestyle using this method.

Example:   Here's an example using this structure:

Block Comparison

The block comparison, also known as the subject-by-subject method, is where you present all the information about one subject and then move to the next subject. This method is effective when the subjects being compared have several significant differences. 

This method is often used for longer essays, and it can help you present your ideas in a clear and organized manner.

Example:  Here's an example using this block comparison:

Compare and Contrast Essay Outline

The outline shapes and provides meaning to the entire essay. It keeps the writer focused and on the right track throughout the writing process.

Here is the traditional compare and contrast essay outline:

Check out this link if you need in depth compare and contrast essay outline ? 

How to Write a Compare and Contrast Essay?

Here are the steps to write a compare and contrast essay;

• Picasso and Goya
• Vegans and meat lovers
• Extroverts and introverts
• Catholicism and Protestantism
• Generation X and Generation Y
• Brainstorming - Brainstorm the similarities and differences between the chosen topics. Use a Venn diagram for your ease. It has overlapping circles that include the differences and similarities between both subjects.
• Choosing the Structure -  Decide which structure will you use to present your ideas; alternating, blocking, or similarities and differences.
• Create the Outline -  Before beginning with the writing process, create the outline for your essay.

The introduction is the first thing that a reader reads. The introduction informs the readers of what is discussed in the essay. The introductory paragraphs have three elements:

• A hook -  is a statement used to grab the reader’s attention. It can be a sentence or two, which will be strictly related to the topic and kind of essay.
• The major similarity or difference -  This is added to help the readers understand what is discussed in the essay. But everything is presented briefly.

Thesis statements can be difficult to write. It is important to have an understanding of a  thesis statement  and how to write it easily.

The main body of an essay is the section where all the gathered information is presented in a structured way. The body paragraphs are written to prove the thesis statement and the stance that a writer made about the topic.

Usually, this section has three paragraphs. Each paragraph should have a topic sentence that will work as a preview of what is going to be discussed in that particular paragraph.

In a compare and contrast essay, body paragraphs are connected by transition words. Words such as “similarly, in contrast to, however, both,” etc., are frequently used to combine the entire content, giving a logical flow to it.

The conclusion of a compare and contrast essay is the summed up final verdict of the writer. The major points are summarized in the concluding paragraph of an essay, and the thesis statement is restated. Make sure that you stick to the discussed ideas and do not add any new information here.

The last part of the writing process of an essay is its proofreading and revision. In this step, you go through your essay one more time to see if there are any mistakes and errors.

Make sure the vocabulary, grammar, spellings, citation, facts, syntax, format are accurate and appropriate. Also, check if the objects are carefully compared, contrasted, and written.

If you come across some errors, correct them before submitting the essay to your instructor.

Compare and Contrast Structure Words

Here are some examples of compare and contrast words:

Compare and Contrast Essay Example

To give you a better understanding of compare and contrast essay concepts, we have gathered some useful examples.

Compare and Contrast Essay Template

Compare And Contrast Essay On City And Village Life

Compare And Contrast Essay On Cricket And Football

Compare And Contrast Essay On Summer And Winter

Compare And Contrast Essay About Traditional And Online Education

Thesis Statement For Compare And Contrast Essay

Learning through examples is a sure short way of learning effectively and in less time. Good  compare and contrast essay examples  will help you understand everything more quickly.

Compare and Contrast Essay Topics

Here are some compare and contrast essay topics:

• Online learning vs. traditional classroom learning: Which is more effective?
• Vegetarianism vs. meat-eating: Which is better for your health?
• High school vs. college: How are they different and similar?
• Living in the city vs. living in the countryside: Which is better for your lifestyle?
• Democracy vs. dictatorship: Which form of government is better for the people?
• Public schools vs. private schools: Which offers a better education?
• Traditional book reading vs. e-book reading: Which is more enjoyable and effective?
• Online shopping vs. in-store shopping: Which is more convenient and cost-effective?
• Dogs vs. cats: Which make better pets?
• Working from home vs. working in an office: Which is more productive and efficient?

These are some good compare and contrast essay topics that will help you draft an amazing essay. 

 Visit this link if you need more amazing compare and contrast essay topics !

Tips to Write a Good Compare and Contrast Essay

When writing a compare and contrast essay, it's important to keep some tips in mind to ensure that your essay is effective and engaging. Here are some tips to help you:

• Avoid generalizations: While it can be tempting to make sweeping generalizations about the subjects you're comparing, it's important to provide specific examples and evidence to support your claims.
• Keep the focus on the subjects being compared: Your essay should be focused on the two (or more) subjects you are comparing and contrasting. Avoid going off on tangents or discussing unrelated topics.
• Provide evidence to support your claims: Whether you are arguing that one subject is better than the other, it's important to use evidence to back up your claims. This could include examples, statistics, quotes, or other types of evidence.
• Use transitional phrases: When moving from one subject to the other, use transitional phrases to make the connections clear. Examples of transitional phrases include "on the other hand," "in contrast," and "similarly."
• Organize your essay effectively: Depending on the type of compare and contrast essay you're writing, you may need to use a point-by-point or block structure. Be sure to choose a structure that works for your topic, and use clear headings and subheadings to help organize your essay.

By following these tips, you can ensure that your essay is well-written and effective in communicating your ideas to your reader.

Mistakes to Avoid While Writing a Compare and Contrast Essay

Let's take a look at some potential pitfalls to avoid while writing your essay:

• Not clearly identifying the basis for comparison - Without a clear basis for comparison, the essay may lack coherence and direction.
• Not providing enough details - These essays require a level of detail that is sufficient to illustrate similarities and differences between the subjects being compared.
• Choosing subjects that are too different - It can be challenging to compare and contrast subjects that are too dissimilar, leading to a weak essay.
• Focusing only on differences - While it is important to highlight differences between the subjects, ignoring similarities can lead to an imbalanced essay.
• Failing to use transitions - Without transitional phrases, the essay may seem disjointed and difficult to follow.
• Not using a consistent structure - Compare and contrast essays require a consistent structure, such as point-by-point or block method, to maintain clarity and organization.
• Being too subjective - While it is important to express your opinion, be sure to present objective evidence to support your claims.
• Ignoring formatting and citation guidelines - Failure to adhere to formatting and citation guidelines can result in plagiarism or lower grades.
• Not proofreading carefully - Typos, grammar errors, and spelling mistakes can detract from the overall quality of the essay.

Here's a compare and contrast essay checklist:

The Bottom Line!

We hope that this guide has provided you with valuable insights and techniques for writing a successful compare and contrast essay. With the right approach, this type of essay can be an exciting opportunity to explore similarities and differences between two subjects.

If you need further assistance or want to ensure that your essay meets the highest standards, don't hesitate to reach out to us at CollegeEssay.org . 

Our compare and contrast essay writing service makes academic life easier for students by providing the best essays written by skilled professionals. 

We offer the best professional essay writing service to students and provide them with expert guidance to help them achieve academic success. 

Contact our essay writing service today and let our college essay writer help you take the first step towards acing your compare and contrast essay! However, if you are on a budget and don't have time to hire a writer, we have just the solution for that. Use our AI essay writer to get plagiarism-free content within a few minutes. 

Frequently Asked Questions

What is a good example of compare and contrast.

A good example of a compare and contrast essay is to compare and contrast two different types of pets, such as dogs and cats. Both pets are popular but have distinct differences in behavior, care, and interaction with their owners.

How do you start a compare and contrast essay example?

To start a compare and contrast essay, begin by choosing two subjects to compare and contrast. Then, brainstorm similarities and differences between the two subjects and create a thesis statement that outlines the main points of comparison and contrast.

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Compare and Contrast

Compare and Contrast two things

Identify the argument

• What makes this paper argumentative?
• "Better" may be defined in different ways, depending on your argument.
• It should be clear to your readers that you have chosen one subject over the other and why you have done so.

Point-by-Point:

Introduction of two subjects for comparison (Paragraph 1). The Introductory paragraph explains to your readers why they will want to compare the two subjects, and reviews for them the points of comparison.

• Paragraph two introduces and explains point 1 for comparison and discusses how it applies to both subjects; i.e. apples and oranges.
• Paragraph three introduces and explains point 2 for comparison and discusses how it applies to both subjects.
• Paragraph  four introduces and explains point 3 for comparison and discusses how it applies to both subjects.

Conclusion of essay, highlighting the similarities and differences of the two subjects and giving overall recommendations as to which one is superior (better) for the audience.

Choose a topic you know a great deal about and can discuss at length. Think of your skills, hobbies, and interests.

• Could you compare two cell phones to propose to the audience which one you think is a better buy/faster for sending videos and pics/easier to use?
• How about two novels by the same or different authors? Which one is clearly better, and WHY?
• What types of exercises to target abdominal muscles?
• Which residence hall is better to live in - closer to the gym, closer to the lake, closer to San Antonio?
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The key to a good compare-and-contrast essay is to choose two or more subjects that connect in a meaningful way. Comparison and contrast is simply telling how two things are alike or different. The compare-and-contrast essay starts with a thesis that clearly states the two subjects that are to be compared, contrasted, or both. The thesis should focus on comparing, contrasting, or both.

Key Elements of the Compare and Contrast:

• A compare-and-contrast essay analyzes two subjects by either comparing them, contrasting them, or both.
• The purpose of writing a comparison or contrast essay is not to state the obvious but rather to illuminate subtle differences or unexpected similarities between two subjects.
• The thesis should clearly state the subjects that are to be compared, contrasted, or both, and it should state what is to be learned from doing so.
• Organize by the subjects themselves, one then the other.
• Organize by individual points, in which you discuss each subject in relation to each point.
• Use phrases of comparison or phrases of contrast to signal to readers how exactly the two subjects are being analyzed.

Objectives: By the end of this unit, you will be able to

• Identify compare & contrast relationships in model essays
• Construct clearly formulated thesis statements that show compare & contrast relationships
• Use pre-writing techniques to brainstorm and organize ideas showing a comparison and/or contrast
• Construct an outline for a five-paragraph compare & contrast essay
• Write a five-paragraph compare & contrast essay
• Use a variety of vocabulary and language structures that express compare & contrast essay relationships

Example Thesis: Organic vegetables may cost more than those that are conventionally grown, but when put to the test, they are definitely worth every extra penny.

Sample Paragraph:

Organic grown tomatoes purchased at the farmers’ market are very different from tomatoes that are grown conventionally. To begin with, although tomatoes from both sources will mostly be red, the tomatoes at the farmers’ market are a brighter red than those at a grocery store. That doesn’t mean they are shinier—in fact, grocery store tomatoes are often shinier since they have been waxed. You are likely to see great size variation in tomatoes at the farmers’ market, with tomatoes ranging from only a couple of inches across to eight inches across. By contrast, the tomatoes in a grocery store will be fairly uniform in size. All the visual differences are interesting, but the most important difference is the taste. The farmers’ market tomatoes will be bursting with flavor from ripening on the vine in their own time. However, the grocery store tomatoes are often close to being flavorless. In conclusion, the differences in organic and conventionally grown tomatoes are obvious in color, size and taste.

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Comparative Essay

How to Write a Comparative Essay – A Complete Guide

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Comparative essay is a common assignment for school and college students. Many students are not aware of the complexities of crafting a strong comparative essay. 

If you too are struggling with this, don't worry!

In this blog, you will get a complete writing guide for comparative essay writing. From structuring formats to creative topics, this guide has it all.

So, keep reading!

• 1. What is a Comparative Essay?
• 2. Comparative Essay Structure
• 3. How to Start a Comparative Essay?
• 4. How to Write a Comparative Essay?
• 5. Comparative Essay Examples
• 6. Comparative Essay Topics
• 7. Tips for Writing A Good Comparative Essay
• 8. Transition Words For Comparative Essays

What is a Comparative Essay?

A comparative essay is a type of essay in which an essay writer compares at least two or more items. The author compares two subjects with the same relation in terms of similarities and differences depending on the assignment.

The main purpose of the comparative essay is to:

• Highlight the similarities and differences in a systematic manner.
• Provide great clarity of the subject to the readers.
• Analyze two things and describe their advantages and drawbacks.

A comparative essay is also known as compare and contrast essay or a comparison essay. It analyzes two subjects by either comparing them, contrasting them, or both. The Venn diagram is the best tool for writing a paper about the comparison between two subjects.  

Moreover, a comparative analysis essay discusses the similarities and differences of themes, items, events, views, places, concepts, etc. For example, you can compare two different novels (e.g., The Adventures of Huckleberry Finn and The Red Badge of Courage).

However, a comparative essay is not limited to specific topics. It covers almost every topic or subject with some relation.

Comparative Essay Structure

A good comparative essay is based on how well you structure your essay. It helps the reader to understand your essay better. 

The structure is more important than what you write. This is because it is necessary to organize your essay so that the reader can easily go through the comparisons made in an essay.

The following are the two main methods in which you can organize your comparative essay.

Point-by-Point Method 

The point-by-point or alternating method provides a detailed overview of the items that you are comparing. In this method, organize items in terms of similarities and differences.

This method makes the writing phase easy for the writer to handle two completely different essay subjects. It is highly recommended where some depth and detail are required.

Below given is the structure of the point-by-point method. 

Block Method 

The block method is the easiest as compared to the point-by-point method. In this method, you divide the information in terms of parameters. It means that the first paragraph compares the first subject and all their items, then the second one compares the second, and so on.

However, make sure that you write the subject in the same order. This method is best for lengthy essays and complicated subjects.

Here is the structure of the block method. 

Therefore, keep these methods in mind and choose the one according to the chosen subject.

Mixed Paragraphs Method

In this method, one paragraph explains one aspect of the subject. As a writer, you will handle one point at a time and one by one. This method is quite beneficial as it allows you to give equal weightage to each subject and help the readers identify the point of comparison easily.

How to Start a Comparative Essay?

Here, we have gathered some steps that you should follow to start a well-written comparative essay.  

Choose a Topic

The foremost step in writing a comparative essay is to choose a suitable topic.

Choose a topic or theme that is interesting to write about and appeals to the reader. 

An interesting essay topic motivates the reader to know about the subject. Also, try to avoid complicated topics for your comparative essay. 

Develop a List of Similarities and Differences 

Create a list of similarities and differences between two subjects that you want to include in the essay. Moreover, this list helps you decide the basis of your comparison by constructing your initial plan. 

Evaluate the list and establish your argument and thesis statement .

Establish the Basis for Comparison 

The basis for comparison is the ground for you to compare the subjects. In most cases, it is assigned to you, so check your assignment or prompt.

Furthermore, the main goal of the comparison essay is to inform the reader of something interesting. It means that your subject must be unique to make your argument interesting.  

Do the Research 

In this step, you have to gather information for your subject. If your comparative essay is about social issues, historical events, or science-related topics, you must do in-depth research.    

However, make sure that you gather data from credible sources and cite them properly in the essay.

Create an Outline

An essay outline serves as a roadmap for your essay, organizing key elements into a structured format.

With your topic, list of comparisons, basis for comparison, and research in hand, the next step is to create a comprehensive outline. 

Here is a standard comparative essay outline:

How to Write a Comparative Essay?

Now that you have the basic information organized in an outline, you can get started on the writing process. 

Here are the essential parts of a comparative essay: 

Comparative Essay Introduction 

Start off by grabbing your reader's attention in the introduction . Use something catchy, like a quote, question, or interesting fact about your subjects. 

Then, give a quick background so your reader knows what's going on. 

The most important part is your thesis statement, where you state the main argument , the basis for comparison, and why the comparison is significant.

This is what a typical thesis statement for a comparative essay looks like:

Comparative Essay Body Paragraphs 

The body paragraphs are where you really get into the details of your subjects. Each paragraph should focus on one thing you're comparing.

Start by talking about the first point of comparison. Then, go on to the next points. Make sure to talk about two to three differences to give a good picture.

After that, switch gears and talk about the things they have in common. Just like you discussed three differences, try to cover three similarities. 

This way, your essay stays balanced and fair. This approach helps your reader understand both the ways your subjects are different and the ways they are similar. Keep it simple and clear for a strong essay.

Comparative Essay Conclusion

In your conclusion , bring together the key insights from your analysis to create a strong and impactful closing.

Consider the broader context or implications of the subjects' differences and similarities. What do these insights reveal about the broader themes or ideas you're exploring?

Discuss the broader implications of these findings and restate your thesis. Avoid introducing new information and end with a thought-provoking statement that leaves a lasting impression.

Below is the detailed comparative essay template format for you to understand better.

Comparative Essay Format

Comparative Essay Examples

Have a look at these comparative essay examples pdf to get an idea of the perfect essay.

Comparative Essay on Summer and Winter

Comparative Essay on Books vs. Movies

Comparative Essay Sample

Comparative Essay Thesis Example

Comparative Essay on Football vs Cricket

Comparative Essay on Pet and Wild Animals

Comparative Essay Topics

Comparative essay topics are not very difficult or complex. Check this list of essay topics and pick the one that you want to write about.

• How do education and employment compare?
• Living in a big city or staying in a village.
• The school principal or college dean.
• New Year vs. Christmas celebration.
• Dried Fruit vs. Fresh. Which is better?
• Similarities between philosophy and religion.
• British colonization and Spanish colonization.
• Nuclear power for peace or war?
• Bacteria or viruses.
• Fast food vs. homemade food.

Tips for Writing A Good Comparative Essay

Writing a compelling comparative essay requires thoughtful consideration and strategic planning. Here are some valuable tips to enhance the quality of your comparative essay:

• Clearly define what you're comparing, like themes or characters.
• Plan your essay structure using methods like point-by-point or block paragraphs.
• Craft an introduction that introduces subjects and states your purpose.
• Ensure an equal discussion of both similarities and differences.
• Use linking words for seamless transitions between paragraphs.
• Gather credible information for depth and authenticity.
• Use clear and simple language, avoiding unnecessary jargon.
• Dedicate each paragraph to a specific point of comparison.
• Summarize key points, restate the thesis, and emphasize significance.
• Thoroughly check for clarity, coherence, and correct any errors.

Transition Words For Comparative Essays

Transition words are crucial for guiding your reader through the comparative analysis. They help establish connections between ideas and ensure a smooth flow in your essay. 

Here are some transition words and phrases to improve the flow of your comparative essay:

Transition Words for Similarities

• Correspondingly
• In the same vein
• In like manner
• In a similar fashion
• In tandem with

Transition Words for Differences

• On the contrary
• In contrast
• Nevertheless
• In spite of
• Notwithstanding
• On the flip side
• In contradistinction

Check out this blog listing more transition words that you can use to enhance your essay’s coherence!

In conclusion, now that you have the important steps and helpful tips to write a good comparative essay, you can start working on your own essay. 

However, if you find it tough to begin, you can always hire our college paper writing service .

Our skilled writers can handle any type of essay or assignment you need. So, don't wait—place your order now and make your academic journey easier!

Frequently Asked Question

How long is a comparative essay.

A comparative essay is 4-5 pages long, but it depends on your chosen idea and topic.

How do you end a comparative essay?

Here are some tips that will help you to end the comparative essay.

• Restate the thesis statement
• Wrap up the entire essay
• Highlight the main points

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• Expository and Informative Essay Topics
• Humorous Essay Topics

Literary Essay Topics

• Narrative and Personal Essay Topics
• Personal Essay Topics
• Persuasive Essay Topics

Research Essay Topics

Argumentative essay topics for high school.

When writing an argumentative essay, remember to do the research and lay out the facts clearly. Your goal is not necessarily to persuade someone to agree with you, but to encourage your reader to accept your point of view as valid. Here are some possible argumentative topics to try. ( Here are 100 more compelling argumentative essay topics. )

• The most important challenge our country is currently facing is … (e.g., immigration, gun control, economy)
• The government should provide free internet access for every citizen.
• All drugs should be legalized, regulated, and taxed.
• Vaping is less harmful than smoking tobacco.
• The best country in the world is …
• Parents should be punished for their minor children’s crimes.
• Should all students have the ability to attend college for free?
• Should physical education be part of the standard high school curriculum?

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• Schools should require recommended vaccines for all students, with very limited exceptions.
• Is it acceptable to use animals for experiments and research?
• Does social media do more harm than good?
• Capital punishment does/does not deter crime.
• What one class should all high schools students be required to take and pass in order to graduate?
• Do we really learn anything from history, or does it just repeat itself over and over?
• Are men and women treated equally?

Cause-and-Effect Essay Topics for High School

A cause-and-effect essay is a type of argumentative essay. Your goal is to show how one specific thing directly influences another specific thing. You’ll likely need to do some research to make your point. Here are some ideas for cause-and-effect essays. ( Get a big list of 100 cause-and-effect essay topics here. )

• Humans are causing accelerated climate change.
• Fast-food restaurants have made human health worse over the decades.
• What caused World War II? (Choose any conflict for this one.)
• Describe the effects social media has on young adults.

• How does playing sports affect people?
• What are the effects of loving to read?
• Being an only/oldest/youngest/middle child makes you …
• What effect does violence in movies or video games have on kids?
• Traveling to new places opens people’s minds to new ideas.
• Racism is caused by …

Compare-Contrast Essay Topics for High School

As the name indicates, in compare-and-contrast essays, writers show the similarities and differences between two things. They combine descriptive writing with analysis, making connections and showing dissimilarities. The following ideas work well for compare-contrast essays. ( Find 80+ compare-contrast essay topics for all ages here. )

• Public and private schools
• Capitalism vs. communism
• Monarchy or democracy
• Dogs vs. cats as pets

• Paper books or e-books
• Two political candidates in a current race
• Going to college vs. starting work full-time
• Working your way through college as you go or taking out student loans
• iPhone or Android
• Instagram vs. Twitter (or choose any other two social media platforms)

Descriptive Essay Topics for High School

Bring on the adjectives! Descriptive writing is all about creating a rich picture for the reader. Take readers on a journey to far-off places, help them understand an experience, or introduce them to a new person. Remember: Show, don’t tell. These topics make excellent descriptive essays.

• Who is the funniest person you know?
• What is your happiest memory?
• Tell about the most inspirational person in your life.
• Write about your favorite place.
• When you were little, what was your favorite thing to do?
• Choose a piece of art or music and explain how it makes you feel.
• What is your earliest memory?

• What’s the best/worst vacation you’ve ever taken?
• Describe your favorite pet.
• What is the most important item in the world to you?
• Give a tour of your bedroom (or another favorite room in your home).
• Describe yourself to someone who has never met you.
• Lay out your perfect day from start to finish.
• Explain what it’s like to move to a new town or start a new school.
• Tell what it would be like to live on the moon.

Expository and Informative Essay Topics for High School

Expository essays set out clear explanations of a particular topic. You might be defining a word or phrase or explaining how something works. Expository or informative essays are based on facts, and while you might explore different points of view, you won’t necessarily say which one is “better” or “right.” Remember: Expository essays educate the reader. Here are some expository and informative essay topics to explore. ( See 70+ expository and informative essay topics here. )

• What makes a good leader?
• Explain why a given school subject (math, history, science, etc.) is important for students to learn.
• What is the “glass ceiling” and how does it affect society?
• Describe how the internet changed the world.
• What does it mean to be a good teacher?

• Explain how we could colonize the moon or another planet.
• Discuss why mental health is just as important as physical health.
• Describe a healthy lifestyle for a teenager.
• Choose an American president and explain how their time in office affected the country.
• What does “financial responsibility” mean?

Humorous Essay Topics for High School

Humorous essays can take on any form, like narrative, persuasive, or expository. You might employ sarcasm or satire, or simply tell a story about a funny person or event. Even though these essay topics are lighthearted, they still take some skill to tackle well. Give these ideas a try.

• What would happen if cats (or any other animal) ruled the world?
• What do newborn babies wish their parents knew?
• Explain the best ways to be annoying on social media.
• Invent a wacky new sport, explain the rules, and describe a game or match.

• Imagine a discussion between two historic figures from very different times, like Cleopatra and Queen Elizabeth I.
• Retell a familiar story in tweets or other social media posts.
• Describe present-day Earth from an alien’s point of view.
• Choose a fictional character and explain why they should be the next president.
• Describe a day when kids are in charge of everything, at school and at home.

Literary essays analyze a piece of writing, like a book or a play. In high school, students usually write literary essays about the works they study in class. These literary essay topic ideas focus on books students often read in high school, but many of them can be tweaked to fit other works as well.

• Discuss the portrayal of women in Shakespeare’s Othello .
• Explore the symbolism used in The Scarlet Letter .
• Explain the importance of dreams in Of Mice and Men .
• Compare and contrast the romantic relationships in Pride and Prejudice .

• Dissect the allegory of Animal Farm and its relation to contemporary events.
• Interpret the author’s take on society and class structure in The Great Gatsby .
• Explore the relationship between Hamlet and Ophelia.
• Discuss whether Shakespeare’s portrayal of young love in Romeo and Juliet is accurate.
• Explain the imagery used in Beowulf .

Narrative and Personal Essay Topics for High School

Think of a narrative essay like telling a story. Use some of the same techniques that you would for a descriptive essay, but be sure you have a beginning, middle, and end. A narrative essay doesn’t necessarily need to be personal, but they often are. Take inspiration from these narrative and personal essay topics.

• Describe a performance or sporting event you took part in.
• Explain the process of cooking and eating your favorite meal.
• Write about meeting your best friend for the first time and how your relationship developed.
• Tell about learning to ride a bike or drive a car.
• Describe a time in your life when you’ve been scared.

• Share the most embarrassing thing that ever happened to you.
• Tell about a time when you overcame a big challenge.
• Tell the story of how you learned an important life lesson.
• Describe a time when you or someone you know experienced prejudice or oppression.
• Explain a family tradition, how it developed, and its importance today.
• What is your favorite holiday? How does your family celebrate it?
• Retell a familiar story from the point of view of a different character.
• Describe a time when you had to make a difficult decision.
• Tell about your proudest moment.

Persuasive Essay Topics for High School

Persuasive essays are similar to argumentative , but they rely less on facts and more on emotion to sway the reader. It’s important to know your audience, so you can anticipate any counterarguments they might make and try to overcome them. Try these topics to persuade someone to come around to your point of view. ( Discover 60 more intriguing persuasive essay topics here. )

• Do you think homework should be required, optional, or not given at all?
• Everyone should be vegetarian or vegan.
• What animal makes the best pet?
• Visit an animal shelter, choose an animal that needs a home, and write an essay persuading someone to adopt that animal.
• Who is the world’s best athlete, present or past?
• Should little kids be allowed to play competitive sports?
• Are professional athletes/musicians/actors overpaid?
• The best music genre is …

• Is democracy the best form of government?
• Is capitalism the best form of economy?
• Students should/should not be able to use their phones during the school day.
• Should schools have dress codes?
• If I could change one school rule, it would be …
• Is year-round school a good idea?

A research essay is a classic high school assignment. These papers require deep research into primary source documents, with lots of supporting facts and evidence that’s properly cited. Research essays can be in any of the styles shown above. Here are some possible topics, across a variety of subjects.

• Which country’s style of government is best for the people who live there?
• Choose a country and analyze its development from founding to present day.
• Describe the causes and effects of a specific war.
• Formulate an ideal economic plan for our country.
• What scientific discovery has had the biggest impact on life today?

• Analyze the way mental health is viewed and treated in this country.
• Explore the ways systemic racism impacts people in all walks of life.
• Defend the importance of teaching music and the arts in public schools.
• Choose one animal from the endangered species list, and propose a realistic plan to protect it.

What are some of your favorite essay topics for high school? Come share your prompts on the WeAreTeachers HELPLINE group on Facebook .

Plus, check out the ultimate guide to student writing contests .

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Academic writing is a formal style of writing used in universities and scholarly publications. It is characterised by a clear focus on argumentation, the presentation of evidence, and a logical structure. This type of writing is essential for communicating complex ideas and research findings in a coherent and credible manner.

What is Academic Writing?

Academic writing is a structured and evidence-based form of writing that is used to convey scholarly information. It includes essays, research papers, dissertations, and reports. This writing style emphasises clarity, precision, and a logical flow of ideas, often incorporating a formal tone and style. The main goal is to inform, argue, or analyse a topic based on evidence and sound reasoning.

Types of Academic Writing

There are several types of academic writing, each serving a different purpose:

These are short pieces of writing on a particular subject, presenting the author’s argument or perspective.

Detailed studies presenting original research findings, often published in academic journals.

Extensive research projects submitted as part of a degree program, presenting the author’s research and findings.

Comprehensive surveys of existing research on a particular topic.

Structured documents that describe and analyse specific topics or events.

Why is Academic Writing Important?

Academic writing is crucial for several reasons. Firstly, it contributes to the body of knowledge in various fields, helping to advance understanding and innovation. Secondly, it allows scholars to communicate their findings and ideas clearly and effectively, fostering academic discourse and collaboration. Thirdly, academic writing helps develop critical thinking and analytical skills, as it requires writers to evaluate evidence, construct coherent arguments, and engage with complex ideas. Additionally, mastering academic writing is essential for academic and professional success, as it is a key component of most higher education curricula.

Academic Research Writing

Academic Writing Structure

The structure of academic writing typically follows a standardised format, which helps organise the content logically and coherently. The basic structure includes :

• Introduction : This section introduces the topic, provides background information, and presents the research question or thesis statement.
• Literature Review : A survey of existing research related to the topic, highlighting gaps and justifying the need for the current study.
• Methodology : A detailed description of the research design, data collection, and analysis methods used in the study.
• Results : Presentation of the research findings, often accompanied by tables, figures, and charts.
• Discussion : Interpretation of the results, discussing their implications, limitations, and suggestions for future research.
• Conclusion : A summary of the main findings and their significance, reiterating the importance of the study.

Academic Writing Styles

Academic writing can vary in style depending on the discipline and the type of writing. Common styles include :

• APA Style: Used primarily in the social sciences, focusing on author-date citation and a clear, straightforward presentation.
• MLA Style: Common in the humanities, emphasising author-page citation and often used in literature and language studies.
• Chicago Style: Used in history and some other disciplines, offering flexibility with either author-date or notes and bibliography citation formats.
• Harvard Style: Similar to APA, commonly used in various fields, known for its author-date citation format.

Each style has its own rules for formatting, citations, and references, which writers must adhere to ensure consistency and credibility.

Understanding academic writing is essential for students, researchers, and professionals engaged in scholarly work. It encompasses various types, each with a specific purpose, and follows a structured format to ensure clarity and coherence.

Academic writing is crucial for contributing to knowledge, developing critical skills, and achieving academic success. By mastering different academic writing styles and structures, writers can effectively communicate their ideas and research findings, advancing their field and fostering academic growth.

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Tips and tricks for crafting an effective compare contrast essay – a comprehensive guide.

When it comes to conveying ideas effectively, there is a powerful tool at your disposal – the compare and contrast essay. This versatile form of writing allows you to put two or more subjects side by side, dissecting their similarities and differences to create a rich tapestry of analysis. Whether you are a budding writer or a seasoned wordsmith, mastering the art of comparing and contrasting can elevate your essays to new heights.

Unlocking the potential of this essay format requires a delicate balance of nuance and structure. By meticulously examining the features, characteristics, and perspectives of different subjects, you can unearth hidden connections and unlock fresh insights. In this step-by-step guide, we will unravel the secrets of crafting a compelling compare and contrast essay, providing you with a roadmap to success.

Throughout this guide, we will explore the intricacies of formulating a strong thesis statement, organizing your essay, and presenting your findings in a coherent and persuasive manner. Furthermore, we will equip you with essential writing techniques that will enable you to analyze and synthesize information effectively. So, grab your pen and paper, and let’s embark on a captivating journey into the world of comparative analysis!

Understanding Compare Contrast Essays

When it comes to exploring the similarities and differences between different subjects or ideas, compare contrast essays offer a valuable tool. These types of essays allow writers to delve into the nuances of various topics, highlighting their similarities and differences in order to provide a deeper understanding of each subject as well as the relationship between them.

A compare contrast essay is not just about listing similarities and differences; it is about analyzing and interpreting them. By examining the shared characteristics and divergent qualities of two or more subjects, writers can uncover hidden connections, explore contrasting viewpoints, and shed light on the intricacies of each topic.

In order to write an effective compare contrast essay, it is important to carefully choose the subjects or ideas that will be compared. The topics should be related in some way, allowing for meaningful comparisons to be made. Additionally, it is crucial to have a clear purpose or thesis statement for the essay, as this will guide the analysis and provide a focus for the essay.

When structuring a compare contrast essay, there are several approaches that can be used. One common method is to present the similarities and differences in a point-by-point format. This involves discussing one aspect of each subject at a time, highlighting the similarities and differences before moving on to the next aspect. Another approach is the block method, where each subject is discussed in its entirety before moving on to the next subject.

By utilizing these different approaches to compare contrast essays, writers can effectively convey their ideas and arguments. The use of appropriate transitions and clear, concise language is also essential in order to ensure that the essay flows smoothly and is easy to understand.

Overall, understanding the purpose and structure of compare contrast essays is crucial when attempting to write a compelling and informative piece. By delving into the similarities and differences between subjects, analyzing their qualities, and presenting the information in a logical and coherent manner, writers can provide readers with a deeper understanding and appreciation of the topics being discussed.

What is a Compare Contrast Essay?

A Compare Contrast Essay is a type of academic writing that explores the similarities and differences between two or more subjects. It is a way of examining and analyzing the characteristics, qualities, and aspects of different things in order to understand their similarities and differences, and to gain a deeper insight into each subject.

When writing a Compare Contrast Essay, the writer carefully examines the subjects, noting their unique features, attributes, or qualities, as well as those that they share in common. The purpose of this type of essay is to highlight the similarities and differences in a clear and logical manner, so that the reader can understand the relationship between the subjects being compared and contrasted.

One way to approach a Compare Contrast Essay is to create a table that categorizes the similarities and differences between the subjects. This table can serve as a visual aid to help organize thoughts and ideas, and to ensure that the essay remains focused and coherent. By using a table, the writer can compare and contrast the subjects in a systematic and organized way, making it easier for the reader to follow the line of thought.

A Compare Contrast Essay can be written on a wide range of topics, such as comparing and contrasting two different authors, two historical events, two scientific theories, or two works of art. The possibilities are endless, and this type of essay allows the writer to delve deeper into the subjects, exploring their intricacies and uncovering new insights.

In conclusion, a Compare Contrast Essay is an academic writing assignment that requires the writer to examine the similarities and differences between two or more subjects. By carefully analyzing and comparing the subjects in a logical and organized manner, the writer can provide the reader with a deeper understanding of the relationship between the subjects and the unique qualities of each.

Why are Compare Contrast Essays Important?

Compare contrast essays play a crucial role in helping readers develop a deeper understanding of the subjects being discussed. By highlighting the similarities and differences between two or more things, these essays provide a comprehensive analysis that can enhance critical thinking and analytical skills.

Firstly, compare contrast essays allow readers to gain a broader perspective on the topics being discussed. By examining both the similarities and differences, readers can see the bigger picture and understand the nuances of each subject. This holistic view can lead to a more well-rounded understanding and appreciation of the topics at hand.

Moreover, the process of writing a compare contrast essay requires careful analysis and research. It encourages students to thoroughly examine each subject, gather evidence, and present it in a logical and organized manner. This critical thinking process helps students develop valuable skills in research, analysis, and writing, which are essential for academic and professional success.

In addition, compare contrast essays foster effective communication skills. By clearly comparing and contrasting two or more subjects, writers must strive to convey their ideas in a concise and coherent manner. This practice in articulating complex thoughts and arguments can greatly enhance a person’s ability to communicate effectively, both in writing and in speaking.

Furthermore, compare contrast essays encourage students to think critically and question assumptions. Through the process of identifying similarities and differences, students are prompted to examine their own beliefs and challenge preconceived notions. This open-mindedness and willingness to explore different perspectives are essential qualities for personal growth, empathy, and understanding.

In conclusion, compare contrast essays are important because they promote a deeper understanding of subjects, develop critical thinking skills, enhance communication abilities, and encourage open-mindedness. By engaging in the process of comparing and contrasting, readers and writers can broaden their horizons and gain insights that go beyond surface-level understanding.

Choosing Topics for Compare Contrast Essays

When it comes to writing a compare contrast essay, one of the most crucial decisions you’ll make is choosing the right topics. The topics you select will set the foundation for your entire essay, influencing the content, structure, and overall argument. With so many options out there, it can be challenging to narrow down the choices. However, by considering a few key factors, you’ll be able to select the perfect topics that will engage your readers and showcase your analytical skills.

The first thing to consider when choosing topics for your essay is relevance. Your topics should be connected in some way, allowing for meaningful comparisons and contrasts. Look for subjects that share similarities or differences, whether it’s within the same category or across different categories. By selecting related topics, you’ll be able to explore interesting connections and provide valuable insights.

Another important aspect to consider is your personal interest and expertise. Choosing topics that you are genuinely passionate about will make the writing process more enjoyable and engaging. Additionally, selecting subjects that you have knowledge and experience in will allow you to provide thoughtful analysis and present compelling arguments. By leveraging your existing knowledge, you’ll be able to craft a well-informed and insightful compare contrast essay.

It’s also essential to assess the potential for generating meaningful and original ideas. Avoid selecting topics that are overly generic or have been extensively covered before. Instead, look for subjects that offer fresh perspectives and unique angles. Think about how you can provide a new lens through which to examine the topics, whether it’s by incorporating different disciplines, historical contexts, or cultural influences. By choosing thought-provoking topics, you’ll be able to create an engaging and intellectually stimulating essay.

Lastly, consider the scope and complexity of the topics. Ensure that the subjects you choose offer enough material for comprehensive analysis and comparison. Avoid topics that are too broad, as they can lead to a superficial exploration. At the same time, avoid topics that are too narrow, as they may limit your ability to provide meaningful insights. Striking the right balance will allow you to delve deep into the subjects and present a rich and well-rounded discussion in your essay.

In conclusion, choosing topics for compare contrast essays requires careful consideration of relevance, personal interest, originality, and scope. By taking the time to select suitable subjects, you’ll be able to craft a compelling essay that not only showcases your analytical skills but also engages your readers. Remember to explore various options, conduct research, and assess the potential for meaningful comparisons and contrasts. With the right topics in hand, you’ll be well on your way to writing an outstanding compare contrast essay.

Step-by-Step Guide to Writing a Compare Contrast Essay

In this section, we will provide you with a detailed and comprehensive step-by-step guide on how to effectively write a compare contrast essay. Comparing and contrasting two entities allows you to analyze their similarities and differences, ultimately providing a deeper understanding of the subjects being discussed. To craft a successful compare contrast essay, it is essential to follow these steps:

By following these steps, you will be well-equipped to write a compelling and well-structured compare contrast essay that effectively analyzes the similarities and differences between two subjects. Remember to maintain a clear focus throughout your essay and provide evidence to support your claims. With practice and diligence, you can become a proficient writer of compare contrast essays.

Structuring a Compare Contrast Essay

Organizing a compare contrast essay is essential to present your ideas effectively and provide a clear structure for your readers to follow.

Firstly, you need to decide on a suitable structure that suits your topic and the purpose of your essay. One common approach is to use a point-by-point structure, where you compare and contrast specific points or aspects of the two subjects. Another option is the block structure, where you discuss all the similarities and differences of one subject first, before moving on to the other.

In order to create a coherent essay, it is important to develop a strong thesis statement that clearly states the main points you will be comparing and contrasting. This will help guide your writing and keep your essay focused and organized.

Once you have your thesis statement, you can start organizing your essay by creating an outline. This will help you determine the main ideas and supporting details for each paragraph. Consider the logical flow of your ideas and make sure to provide transitions between paragraphs to ensure a smooth and coherent essay.

When writing the body paragraphs, make sure to clearly introduce each point of comparison or contrast. Provide specific examples and evidence to support your claims and make your arguments more convincing.

Finally, don’t forget to include a strong conclusion that summarizes your main points and reinforces your thesis statement. This will help leave a lasting impression on your readers and tie your essay together.

Overall, structuring a compare contrast essay is crucial to effectively present your ideas and arguments. By following a clear and organized structure, you can ensure that your essay is coherent and easy to follow, making it more engaging and persuasive for your readers.

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Recent advancements in artificial intelligence (AI) have led to an increased use of large language models (LLMs) for language assessment tasks such as automated essay scoring (AES), automated listening tests, and automated oral proficiency assessments. The application of LLMs for AES in the context of non-native Japanese, however, remains limited. This study explores the potential of LLM-based AES by comparing the efficiency of different models, i.e. two conventional machine training technology-based methods (Jess and JWriter), two LLMs (GPT and BERT), and one Japanese local LLM (Open-Calm large model). To conduct the evaluation, a dataset consisting of 1400 story-writing scripts authored by learners with 12 different first languages was used. Statistical analysis revealed that GPT-4 outperforms Jess and JWriter, BERT, and the Japanese language-specific trained Open-Calm large model in terms of annotation accuracy and predicting learning levels. Furthermore, by comparing 18 different models that utilize various prompts, the study emphasized the significance of prompts in achieving accurate and reliable evaluations using LLMs.

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Conventional machine learning technology in aes.

AES has experienced significant growth with the advancement of machine learning technologies in recent decades. In the earlier stages of AES development, conventional machine learning-based approaches were commonly used. These approaches involved the following procedures: a) feeding the machine with a dataset. In this step, a dataset of essays is provided to the machine learning system. The dataset serves as the basis for training the model and establishing patterns and correlations between linguistic features and human ratings. b) the machine learning model is trained using linguistic features that best represent human ratings and can effectively discriminate learners’ writing proficiency. These features include lexical richness (Lu, 2012 ; Kyle and Crossley, 2015 ; Kyle et al. 2021 ), syntactic complexity (Lu, 2010 ; Liu, 2008 ), text cohesion (Crossley and McNamara, 2016 ), and among others. Conventional machine learning approaches in AES require human intervention, such as manual correction and annotation of essays. This human involvement was necessary to create a labeled dataset for training the model. Several AES systems have been developed using conventional machine learning technologies. These include the Intelligent Essay Assessor (Landauer et al. 2003 ), the e-rater engine by Educational Testing Service (Attali and Burstein, 2006 ; Burstein, 2003 ), MyAccess with the InterlliMetric scoring engine by Vantage Learning (Elliot, 2003 ), and the Bayesian Essay Test Scoring system (Rudner and Liang, 2002 ). These systems have played a significant role in automating the essay scoring process and providing quick and consistent feedback to learners. However, as touched upon earlier, conventional machine learning approaches rely on predetermined linguistic features and often require manual intervention, making them less flexible and potentially limiting their generalizability to different contexts.

In the context of the Japanese language, conventional machine learning-incorporated AES tools include Jess (Ishioka and Kameda, 2006 ) and JWriter (Lee and Hasebe, 2017 ). Jess assesses essays by deducting points from the perfect score, utilizing the Mainichi Daily News newspaper as a database. The evaluation criteria employed by Jess encompass various aspects, such as rhetorical elements (e.g., reading comprehension, vocabulary diversity, percentage of complex words, and percentage of passive sentences), organizational structures (e.g., forward and reverse connection structures), and content analysis (e.g., latent semantic indexing). JWriter employs linear regression analysis to assign weights to various measurement indices, such as average sentence length and total number of characters. These weights are then combined to derive the overall score. A pilot study involving the Jess model was conducted on 1320 essays at different proficiency levels, including primary, intermediate, and advanced. However, the results indicated that the Jess model failed to significantly distinguish between these essay levels. Out of the 16 measures used, four measures, namely median sentence length, median clause length, median number of phrases, and maximum number of phrases, did not show statistically significant differences between the levels. Additionally, two measures exhibited between-level differences but lacked linear progression: the number of attributives declined words and the Kanji/kana ratio. On the other hand, the remaining measures, including maximum sentence length, maximum clause length, number of attributive conjugated words, maximum number of consecutive infinitive forms, maximum number of conjunctive-particle clauses, k characteristic value, percentage of big words, and percentage of passive sentences, demonstrated statistically significant between-level differences and displayed linear progression.

Both Jess and JWriter exhibit notable limitations, including the manual selection of feature parameters and weights, which can introduce biases into the scoring process. The reliance on human annotators to label non-native language essays also introduces potential noise and variability in the scoring. Furthermore, an important concern is the possibility of system manipulation and cheating by learners who are aware of the regression equation utilized by the models (Hirao et al. 2020 ). These limitations emphasize the need for further advancements in AES systems to address these challenges.

Deep learning technology in AES

Deep learning has emerged as one of the approaches for improving the accuracy and effectiveness of AES. Deep learning-based AES methods utilize artificial neural networks that mimic the human brain’s functioning through layered algorithms and computational units. Unlike conventional machine learning, deep learning autonomously learns from the environment and past errors without human intervention. This enables deep learning models to establish nonlinear correlations, resulting in higher accuracy. Recent advancements in deep learning have led to the development of transformers, which are particularly effective in learning text representations. Noteworthy examples include bidirectional encoder representations from transformers (BERT) (Devlin et al. 2019 ) and the generative pretrained transformer (GPT) (OpenAI).

BERT is a linguistic representation model that utilizes a transformer architecture and is trained on two tasks: masked linguistic modeling and next-sentence prediction (Hirao et al. 2020 ; Vaswani et al. 2017 ). In the context of AES, BERT follows specific procedures, as illustrated in Fig. 1 : (a) the tokenized prompts and essays are taken as input; (b) special tokens, such as [CLS] and [SEP], are added to mark the beginning and separation of prompts and essays; (c) the transformer encoder processes the prompt and essay sequences, resulting in hidden layer sequences; (d) the hidden layers corresponding to the [CLS] tokens (T[CLS]) represent distributed representations of the prompts and essays; and (e) a multilayer perceptron uses these distributed representations as input to obtain the final score (Hirao et al. 2020 ).

AES system with BERT (Hirao et al. 2020 ).

The training of BERT using a substantial amount of sentence data through the Masked Language Model (MLM) allows it to capture contextual information within the hidden layers. Consequently, BERT is expected to be capable of identifying artificial essays as invalid and assigning them lower scores (Mizumoto and Eguchi, 2023 ). In the context of AES for nonnative Japanese learners, Hirao et al. ( 2020 ) combined the long short-term memory (LSTM) model proposed by Hochreiter and Schmidhuber ( 1997 ) with BERT to develop a tailored automated Essay Scoring System. The findings of their study revealed that the BERT model outperformed both the conventional machine learning approach utilizing character-type features such as “kanji” and “hiragana”, as well as the standalone LSTM model. Takeuchi et al. ( 2021 ) presented an approach to Japanese AES that eliminates the requirement for pre-scored essays by relying solely on reference texts or a model answer for the essay task. They investigated multiple similarity evaluation methods, including frequency of morphemes, idf values calculated on Wikipedia, LSI, LDA, word-embedding vectors, and document vectors produced by BERT. The experimental findings revealed that the method utilizing the frequency of morphemes with idf values exhibited the strongest correlation with human-annotated scores across different essay tasks. The utilization of BERT in AES encounters several limitations. Firstly, essays often exceed the model’s maximum length limit. Second, only score labels are available for training, which restricts access to additional information.

Mizumoto and Eguchi ( 2023 ) were pioneers in employing the GPT model for AES in non-native English writing. Their study focused on evaluating the accuracy and reliability of AES using the GPT-3 text-davinci-003 model, analyzing a dataset of 12,100 essays from the corpus of nonnative written English (TOEFL11). The findings indicated that AES utilizing the GPT-3 model exhibited a certain degree of accuracy and reliability. They suggest that GPT-3-based AES systems hold the potential to provide support for human ratings. However, applying GPT model to AES presents a unique natural language processing (NLP) task that involves considerations such as nonnative language proficiency, the influence of the learner’s first language on the output in the target language, and identifying linguistic features that best indicate writing quality in a specific language. These linguistic features may differ morphologically or syntactically from those present in the learners’ first language, as observed in (1)–(3).

我-送了-他-一本-书

Wǒ-sòngle-tā-yī běn-shū

1 sg .-give. past- him-one .cl- book

“I gave him a book.”

Agglutinative

彼-に-本-を-あげ-まし-た

Kare-ni-hon-o-age-mashi-ta

3 sg .- dat -hon- acc- give.honorification. past

Inflectional

give, give-s, gave, given, giving

Additionally, the morphological agglutination and subject-object-verb (SOV) order in Japanese, along with its idiomatic expressions, pose additional challenges for applying language models in AES tasks (4).

足-が 棒-に なり-ました

Ashi-ga bo-ni nar-mashita

leg- nom stick- dat become- past

“My leg became like a stick (I am extremely tired).”

The example sentence provided demonstrates the morpho-syntactic structure of Japanese and the presence of an idiomatic expression. In this sentence, the verb “なる” (naru), meaning “to become”, appears at the end of the sentence. The verb stem “なり” (nari) is attached with morphemes indicating honorification (“ます” - mashu) and tense (“た” - ta), showcasing agglutination. While the sentence can be literally translated as “my leg became like a stick”, it carries an idiomatic interpretation that implies “I am extremely tired”.

To overcome this issue, CyberAgent Inc. ( 2023 ) has developed the Open-Calm series of language models specifically designed for Japanese. Open-Calm consists of pre-trained models available in various sizes, such as Small, Medium, Large, and 7b. Figure 2 depicts the fundamental structure of the Open-Calm model. A key feature of this architecture is the incorporation of the Lora Adapter and GPT-NeoX frameworks, which can enhance its language processing capabilities.

GPT-NeoX Model Architecture (Okgetheng and Takeuchi 2024 ).

In a recent study conducted by Okgetheng and Takeuchi ( 2024 ), they assessed the efficacy of Open-Calm language models in grading Japanese essays. The research utilized a dataset of approximately 300 essays, which were annotated by native Japanese educators. The findings of the study demonstrate the considerable potential of Open-Calm language models in automated Japanese essay scoring. Specifically, among the Open-Calm family, the Open-Calm Large model (referred to as OCLL) exhibited the highest performance. However, it is important to note that, as of the current date, the Open-Calm Large model does not offer public access to its server. Consequently, users are required to independently deploy and operate the environment for OCLL. In order to utilize OCLL, users must have a PC equipped with an NVIDIA GeForce RTX 3060 (8 or 12 GB VRAM).

In summary, while the potential of LLMs in automated scoring of nonnative Japanese essays has been demonstrated in two studies—BERT-driven AES (Hirao et al. 2020 ) and OCLL-based AES (Okgetheng and Takeuchi, 2024 )—the number of research efforts in this area remains limited.

Another significant challenge in applying LLMs to AES lies in prompt engineering and ensuring its reliability and effectiveness (Brown et al. 2020 ; Rae et al. 2021 ; Zhang et al. 2021 ). Various prompting strategies have been proposed, such as the zero-shot chain of thought (CoT) approach (Kojima et al. 2022 ), which involves manually crafting diverse and effective examples. However, manual efforts can lead to mistakes. To address this, Zhang et al. ( 2021 ) introduced an automatic CoT prompting method called Auto-CoT, which demonstrates matching or superior performance compared to the CoT paradigm. Another prompt framework is trees of thoughts, enabling a model to self-evaluate its progress at intermediate stages of problem-solving through deliberate reasoning (Yao et al. 2023 ).

Beyond linguistic studies, there has been a noticeable increase in the number of foreign workers in Japan and Japanese learners worldwide (Ministry of Health, Labor, and Welfare of Japan, 2022 ; Japan Foundation, 2021 ). However, existing assessment methods, such as the Japanese Language Proficiency Test (JLPT), J-CAT, and TTBJ Footnote 1 , primarily focus on reading, listening, vocabulary, and grammar skills, neglecting the evaluation of writing proficiency. As the number of workers and language learners continues to grow, there is a rising demand for an efficient AES system that can reduce costs and time for raters and be utilized for employment, examinations, and self-study purposes.

This study aims to explore the potential of LLM-based AES by comparing the effectiveness of five models: two LLMs (GPT Footnote 2 and BERT), one Japanese local LLM (OCLL), and two conventional machine learning-based methods (linguistic feature-based scoring tools - Jess and JWriter).

The research questions addressed in this study are as follows:

To what extent do the LLM-driven AES and linguistic feature-based AES, when used as automated tools to support human rating, accurately reflect test takers’ actual performance?

What influence does the prompt have on the accuracy and performance of LLM-based AES methods?

The subsequent sections of the manuscript cover the methodology, including the assessment measures for nonnative Japanese writing proficiency, criteria for prompts, and the dataset. The evaluation section focuses on the analysis of annotations and rating scores generated by LLM-driven and linguistic feature-based AES methods.

Methodology

The dataset utilized in this study was obtained from the International Corpus of Japanese as a Second Language (I-JAS) Footnote 3 . This corpus consisted of 1000 participants who represented 12 different first languages. For the study, the participants were given a story-writing task on a personal computer. They were required to write two stories based on the 4-panel illustrations titled “Picnic” and “The key” (see Appendix A). Background information for the participants was provided by the corpus, including their Japanese language proficiency levels assessed through two online tests: J-CAT and SPOT. These tests evaluated their reading, listening, vocabulary, and grammar abilities. The learners’ proficiency levels were categorized into six levels aligned with the Common European Framework of Reference for Languages (CEFR) and the Reference Framework for Japanese Language Education (RFJLE): A1, A2, B1, B2, C1, and C2. According to Lee et al. ( 2015 ), there is a high level of agreement (r = 0.86) between the J-CAT and SPOT assessments, indicating that the proficiency certifications provided by J-CAT are consistent with those of SPOT. However, it is important to note that the scores of J-CAT and SPOT do not have a one-to-one correspondence. In this study, the J-CAT scores were used as a benchmark to differentiate learners of different proficiency levels. A total of 1400 essays were utilized, representing the beginner (aligned with A1), A2, B1, B2, C1, and C2 levels based on the J-CAT scores. Table 1 provides information about the learners’ proficiency levels and their corresponding J-CAT and SPOT scores.

A dataset comprising a total of 1400 essays from the story writing tasks was collected. Among these, 714 essays were utilized to evaluate the reliability of the LLM-based AES method, while the remaining 686 essays were designated as development data to assess the LLM-based AES’s capability to distinguish participants with varying proficiency levels. The GPT 4 API was used in this study. A detailed explanation of the prompt-assessment criteria is provided in Section Prompt . All essays were sent to the model for measurement and scoring.

Measures of writing proficiency for nonnative Japanese

Japanese exhibits a morphologically agglutinative structure where morphemes are attached to the word stem to convey grammatical functions such as tense, aspect, voice, and honorifics, e.g. (5).

食べ-させ-られ-まし-た-か

tabe-sase-rare-mashi-ta-ka

[eat (stem)-causative-passive voice-honorification-tense. past-question marker]

Japanese employs nine case particles to indicate grammatical functions: the nominative case particle が (ga), the accusative case particle を (o), the genitive case particle の (no), the dative case particle に (ni), the locative/instrumental case particle で (de), the ablative case particle から (kara), the directional case particle へ (e), and the comitative case particle と (to). The agglutinative nature of the language, combined with the case particle system, provides an efficient means of distinguishing between active and passive voice, either through morphemes or case particles, e.g. 食べる taberu “eat concusive . ” (active voice); 食べられる taberareru “eat concusive . ” (passive voice). In the active voice, “パン を 食べる” (pan o taberu) translates to “to eat bread”. On the other hand, in the passive voice, it becomes “パン が 食べられた” (pan ga taberareta), which means “(the) bread was eaten”. Additionally, it is important to note that different conjugations of the same lemma are considered as one type in order to ensure a comprehensive assessment of the language features. For example, e.g., 食べる taberu “eat concusive . ”; 食べている tabeteiru “eat progress .”; 食べた tabeta “eat past . ” as one type.

To incorporate these features, previous research (Suzuki, 1999 ; Watanabe et al. 1988 ; Ishioka, 2001 ; Ishioka and Kameda, 2006 ; Hirao et al. 2020 ) has identified complexity, fluency, and accuracy as crucial factors for evaluating writing quality. These criteria are assessed through various aspects, including lexical richness (lexical density, diversity, and sophistication), syntactic complexity, and cohesion (Kyle et al. 2021 ; Mizumoto and Eguchi, 2023 ; Ure, 1971 ; Halliday, 1985 ; Barkaoui and Hadidi, 2020 ; Zenker and Kyle, 2021 ; Kim et al. 2018 ; Lu, 2017 ; Ortega, 2015 ). Therefore, this study proposes five scoring categories: lexical richness, syntactic complexity, cohesion, content elaboration, and grammatical accuracy. A total of 16 measures were employed to capture these categories. The calculation process and specific details of these measures can be found in Table 2 .

T-unit, first introduced by Hunt ( 1966 ), is a measure used for evaluating speech and composition. It serves as an indicator of syntactic development and represents the shortest units into which a piece of discourse can be divided without leaving any sentence fragments. In the context of Japanese language assessment, Sakoda and Hosoi ( 2020 ) utilized T-unit as the basic unit to assess the accuracy and complexity of Japanese learners’ speaking and storytelling. The calculation of T-units in Japanese follows the following principles:

A single main clause constitutes 1 T-unit, regardless of the presence or absence of dependent clauses, e.g. (6).

ケンとマリはピクニックに行きました (main clause): 1 T-unit.

If a sentence contains a main clause along with subclauses, each subclause is considered part of the same T-unit, e.g. (7).

天気が良かった の で (subclause)、ケンとマリはピクニックに行きました (main clause): 1 T-unit.

In the case of coordinate clauses, where multiple clauses are connected, each coordinated clause is counted separately. Thus, a sentence with coordinate clauses may have 2 T-units or more, e.g. (8).

ケンは地図で場所を探して (coordinate clause)、マリはサンドイッチを作りました (coordinate clause): 2 T-units.

Lexical diversity refers to the range of words used within a text (Engber, 1995 ; Kyle et al. 2021 ) and is considered a useful measure of the breadth of vocabulary in L n production (Jarvis, 2013a , 2013b ).

The type/token ratio (TTR) is widely recognized as a straightforward measure for calculating lexical diversity and has been employed in numerous studies. These studies have demonstrated a strong correlation between TTR and other methods of measuring lexical diversity (e.g., Bentz et al. 2016 ; Čech and Miroslav, 2018 ; Çöltekin and Taraka, 2018 ). TTR is computed by considering both the number of unique words (types) and the total number of words (tokens) in a given text. Given that the length of learners’ writing texts can vary, this study employs the moving average type-token ratio (MATTR) to mitigate the influence of text length. MATTR is calculated using a 50-word moving window. Initially, a TTR is determined for words 1–50 in an essay, followed by words 2–51, 3–52, and so on until the end of the essay is reached (Díez-Ortega and Kyle, 2023 ). The final MATTR scores were obtained by averaging the TTR scores for all 50-word windows. The following formula was employed to derive MATTR:

\({\rm{MATTR}}({\rm{W}})=\frac{{\sum }_{{\rm{i}}=1}^{{\rm{N}}-{\rm{W}}+1}{{\rm{F}}}_{{\rm{i}}}}{{\rm{W}}({\rm{N}}-{\rm{W}}+1)}\)

Here, N refers to the number of tokens in the corpus. W is the randomly selected token size (W < N). \({F}_{i}\) is the number of types in each window. The \({\rm{MATTR}}({\rm{W}})\) is the mean of a series of type-token ratios (TTRs) based on the word form for all windows. It is expected that individuals with higher language proficiency will produce texts with greater lexical diversity, as indicated by higher MATTR scores.

Lexical density was captured by the ratio of the number of lexical words to the total number of words (Lu, 2012 ). Lexical sophistication refers to the utilization of advanced vocabulary, often evaluated through word frequency indices (Crossley et al. 2013 ; Haberman, 2008 ; Kyle and Crossley, 2015 ; Laufer and Nation, 1995 ; Lu, 2012 ; Read, 2000 ). In line of writing, lexical sophistication can be interpreted as vocabulary breadth, which entails the appropriate usage of vocabulary items across various lexicon-grammatical contexts and registers (Garner et al. 2019 ; Kim et al. 2018 ; Kyle et al. 2018 ). In Japanese specifically, words are considered lexically sophisticated if they are not included in the “Japanese Education Vocabulary List Ver 1.0”. Footnote 4 Consequently, lexical sophistication was calculated by determining the number of sophisticated word types relative to the total number of words per essay. Furthermore, it has been suggested that, in Japanese writing, sentences should ideally have a length of no more than 40 to 50 characters, as this promotes readability. Therefore, the median and maximum sentence length can be considered as useful indices for assessment (Ishioka and Kameda, 2006 ).

Syntactic complexity was assessed based on several measures, including the mean length of clauses, verb phrases per T-unit, clauses per T-unit, dependent clauses per T-unit, complex nominals per clause, adverbial clauses per clause, coordinate phrases per clause, and mean dependency distance (MDD). The MDD reflects the distance between the governor and dependent positions in a sentence. A larger dependency distance indicates a higher cognitive load and greater complexity in syntactic processing (Liu, 2008 ; Liu et al. 2017 ). The MDD has been established as an efficient metric for measuring syntactic complexity (Jiang, Quyang, and Liu, 2019 ; Li and Yan, 2021 ). To calculate the MDD, the position numbers of the governor and dependent are subtracted, assuming that words in a sentence are assigned in a linear order, such as W1 … Wi … Wn. In any dependency relationship between words Wa and Wb, Wa is the governor and Wb is the dependent. The MDD of the entire sentence was obtained by taking the absolute value of governor – dependent:

MDD = \(\frac{1}{n}{\sum }_{i=1}^{n}|{\rm{D}}{{\rm{D}}}_{i}|\)

In this formula, \(n\) represents the number of words in the sentence, and \({DD}i\) is the dependency distance of the \({i}^{{th}}\) dependency relationship of a sentence. Building on this, the annotation of sentence ‘Mary-ga-John-ni-keshigomu-o-watashita was [Mary- top -John- dat -eraser- acc -give- past] ’. The sentence’s MDD would be 2. Table 3 provides the CSV file as a prompt for GPT 4.

Cohesion (semantic similarity) and content elaboration aim to capture the ideas presented in test taker’s essays. Cohesion was assessed using three measures: Synonym overlap/paragraph (topic), Synonym overlap/paragraph (keywords), and word2vec cosine similarity. Content elaboration and development were measured as the number of metadiscourse markers (type)/number of words. To capture content closely, this study proposed a novel-distance based representation, by encoding the cosine distance between the essay (by learner) and essay task’s (topic and keyword) i -vectors. The learner’s essay is decoded into a word sequence, and aligned to the essay task’ topic and keyword for log-likelihood measurement. The cosine distance reveals the content elaboration score in the leaners’ essay. The mathematical equation of cosine similarity between target-reference vectors is shown in (11), assuming there are i essays and ( L i , …. L n ) and ( N i , …. N n ) are the vectors representing the learner and task’s topic and keyword respectively. The content elaboration distance between L i and N i was calculated as follows:

\(\cos \left(\theta \right)=\frac{{\rm{L}}\,\cdot\, {\rm{N}}}{\left|{\rm{L}}\right|{\rm{|N|}}}=\frac{\mathop{\sum }\nolimits_{i=1}^{n}{L}_{i}{N}_{i}}{\sqrt{\mathop{\sum }\nolimits_{i=1}^{n}{L}_{i}^{2}}\sqrt{\mathop{\sum }\nolimits_{i=1}^{n}{N}_{i}^{2}}}\)

A high similarity value indicates a low difference between the two recognition outcomes, which in turn suggests a high level of proficiency in content elaboration.

To evaluate the effectiveness of the proposed measures in distinguishing different proficiency levels among nonnative Japanese speakers’ writing, we conducted a multi-faceted Rasch measurement analysis (Linacre, 1994 ). This approach applies measurement models to thoroughly analyze various factors that can influence test outcomes, including test takers’ proficiency, item difficulty, and rater severity, among others. The underlying principles and functionality of multi-faceted Rasch measurement are illustrated in (12).

\(\log \left(\frac{{P}_{{nijk}}}{{P}_{{nij}(k-1)}}\right)={B}_{n}-{D}_{i}-{C}_{j}-{F}_{k}\)

(12) defines the logarithmic transformation of the probability ratio ( P nijk /P nij(k-1) )) as a function of multiple parameters. Here, n represents the test taker, i denotes a writing proficiency measure, j corresponds to the human rater, and k represents the proficiency score. The parameter B n signifies the proficiency level of test taker n (where n ranges from 1 to N). D j represents the difficulty parameter of test item i (where i ranges from 1 to L), while C j represents the severity of rater j (where j ranges from 1 to J). Additionally, F k represents the step difficulty for a test taker to move from score ‘k-1’ to k . P nijk refers to the probability of rater j assigning score k to test taker n for test item i . P nij(k-1) represents the likelihood of test taker n being assigned score ‘k-1’ by rater j for test item i . Each facet within the test is treated as an independent parameter and estimated within the same reference framework. To evaluate the consistency of scores obtained through both human and computer analysis, we utilized the Infit mean-square statistic. This statistic is a chi-square measure divided by the degrees of freedom and is weighted with information. It demonstrates higher sensitivity to unexpected patterns in responses to items near a person’s proficiency level (Linacre, 2002 ). Fit statistics are assessed based on predefined thresholds for acceptable fit. For the Infit MNSQ, which has a mean of 1.00, different thresholds have been suggested. Some propose stricter thresholds ranging from 0.7 to 1.3 (Bond et al. 2021 ), while others suggest more lenient thresholds ranging from 0.5 to 1.5 (Eckes, 2009 ). In this study, we adopted the criterion of 0.70–1.30 for the Infit MNSQ.

Moving forward, we can now proceed to assess the effectiveness of the 16 proposed measures based on five criteria for accurately distinguishing various levels of writing proficiency among non-native Japanese speakers. To conduct this evaluation, we utilized the development dataset from the I-JAS corpus, as described in Section Dataset . Table 4 provides a measurement report that presents the performance details of the 14 metrics under consideration. The measure separation was found to be 4.02, indicating a clear differentiation among the measures. The reliability index for the measure separation was 0.891, suggesting consistency in the measurement. Similarly, the person separation reliability index was 0.802, indicating the accuracy of the assessment in distinguishing between individuals. All 16 measures demonstrated Infit mean squares within a reasonable range, ranging from 0.76 to 1.28. The Synonym overlap/paragraph (topic) measure exhibited a relatively high outfit mean square of 1.46, although the Infit mean square falls within an acceptable range. The standard error for the measures ranged from 0.13 to 0.28, indicating the precision of the estimates.

Table 5 further illustrated the weights assigned to different linguistic measures for score prediction, with higher weights indicating stronger correlations between those measures and higher scores. Specifically, the following measures exhibited higher weights compared to others: moving average type token ratio per essay has a weight of 0.0391. Mean dependency distance had a weight of 0.0388. Mean length of clause, calculated by dividing the number of words by the number of clauses, had a weight of 0.0374. Complex nominals per T-unit, calculated by dividing the number of complex nominals by the number of T-units, had a weight of 0.0379. Coordinate phrases rate, calculated by dividing the number of coordinate phrases by the number of clauses, had a weight of 0.0325. Grammatical error rate, representing the number of errors per essay, had a weight of 0.0322.

Criteria (output indicator)

The criteria used to evaluate the writing ability in this study were based on CEFR, which follows a six-point scale ranging from A1 to C2. To assess the quality of Japanese writing, the scoring criteria from Table 6 were utilized. These criteria were derived from the IELTS writing standards and served as assessment guidelines and prompts for the written output.

A prompt is a question or detailed instruction that is provided to the model to obtain a proper response. After several pilot experiments, we decided to provide the measures (Section Measures of writing proficiency for nonnative Japanese ) as the input prompt and use the criteria (Section Criteria (output indicator) ) as the output indicator. Regarding the prompt language, considering that the LLM was tasked with rating Japanese essays, would prompt in Japanese works better Footnote 5 ? We conducted experiments comparing the performance of GPT-4 using both English and Japanese prompts. Additionally, we utilized the Japanese local model OCLL with Japanese prompts. Multiple trials were conducted using the same sample. Regardless of the prompt language used, we consistently obtained the same grading results with GPT-4, which assigned a grade of B1 to the writing sample. This suggested that GPT-4 is reliable and capable of producing consistent ratings regardless of the prompt language. On the other hand, when we used Japanese prompts with the Japanese local model “OCLL”, we encountered inconsistent grading results. Out of 10 attempts with OCLL, only 6 yielded consistent grading results (B1), while the remaining 4 showed different outcomes, including A1 and B2 grades. These findings indicated that the language of the prompt was not the determining factor for reliable AES. Instead, the size of the training data and the model parameters played crucial roles in achieving consistent and reliable AES results for the language model.

The following is the utilized prompt, which details all measures and requires the LLM to score the essays using holistic and trait scores.

Please evaluate Japanese essays written by Japanese learners and assign a score to each essay on a six-point scale, ranging from A1, A2, B1, B2, C1 to C2. Additionally, please provide trait scores and display the calculation process for each trait score. The scoring should be based on the following criteria:

Moving average type-token ratio.

Number of lexical words (token) divided by the total number of words per essay.

Number of sophisticated word types divided by the total number of words per essay.

Mean length of clause.

Verb phrases per T-unit.

Clauses per T-unit.

Dependent clauses per T-unit.

Complex nominals per clause.

Adverbial clauses per clause.

Coordinate phrases per clause.

Mean dependency distance.

Synonym overlap paragraph (topic and keywords).

Word2vec cosine similarity.

Connectives per essay.

Conjunctions per essay.

Number of metadiscourse markers (types) divided by the total number of words.

Number of errors per essay.

Japanese essay text

出かける前に二人が地図を見ている間に、サンドイッチを入れたバスケットに犬が入ってしまいました。それに気づかずに二人は楽しそうに出かけて行きました。やがて突然犬がバスケットから飛び出し、二人は驚きました。バスケット の 中を見ると、食べ物はすべて犬に食べられていて、二人は困ってしまいました。(ID_JJJ01_SW1)

The score of the example above was B1. Figure 3 provides an example of holistic and trait scores provided by GPT-4 (with a prompt indicating all measures) via Bing Footnote 6 .

Example of GPT-4 AES and feedback (with a prompt indicating all measures).

Statistical analysis

The aim of this study is to investigate the potential use of LLM for nonnative Japanese AES. It seeks to compare the scoring outcomes obtained from feature-based AES tools, which rely on conventional machine learning technology (i.e. Jess, JWriter), with those generated by AI-driven AES tools utilizing deep learning technology (BERT, GPT, OCLL). To assess the reliability of a computer-assisted annotation tool, the study initially established human-human agreement as the benchmark measure. Subsequently, the performance of the LLM-based method was evaluated by comparing it to human-human agreement.

To assess annotation agreement, the study employed standard measures such as precision, recall, and F-score (Brants 2000 ; Lu 2010 ), along with the quadratically weighted kappa (QWK) to evaluate the consistency and agreement in the annotation process. Assume A and B represent human annotators. When comparing the annotations of the two annotators, the following results are obtained. The evaluation of precision, recall, and F-score metrics was illustrated in equations (13) to (15).

\({\rm{Recall}}(A,B)=\frac{{\rm{Number}}\,{\rm{of}}\,{\rm{identical}}\,{\rm{nodes}}\,{\rm{in}}\,A\,{\rm{and}}\,B}{{\rm{Number}}\,{\rm{of}}\,{\rm{nodes}}\,{\rm{in}}\,A}\)

\({\rm{Precision}}(A,\,B)=\frac{{\rm{Number}}\,{\rm{of}}\,{\rm{identical}}\,{\rm{nodes}}\,{\rm{in}}\,A\,{\rm{and}}\,B}{{\rm{Number}}\,{\rm{of}}\,{\rm{nodes}}\,{\rm{in}}\,B}\)

The F-score is the harmonic mean of recall and precision:

\({\rm{F}}-{\rm{score}}=\frac{2* ({\rm{Precision}}* {\rm{Recall}})}{{\rm{Precision}}+{\rm{Recall}}}\)

The highest possible value of an F-score is 1.0, indicating perfect precision and recall, and the lowest possible value is 0, if either precision or recall are zero.

In accordance with Taghipour and Ng ( 2016 ), the calculation of QWK involves two steps:

Step 1: Construct a weight matrix W as follows:

\({W}_{{ij}}=\frac{{(i-j)}^{2}}{{(N-1)}^{2}}\)

i represents the annotation made by the tool, while j represents the annotation made by a human rater. N denotes the total number of possible annotations. Matrix O is subsequently computed, where O_( i, j ) represents the count of data annotated by the tool ( i ) and the human annotator ( j ). On the other hand, E refers to the expected count matrix, which undergoes normalization to ensure that the sum of elements in E matches the sum of elements in O.

Step 2: With matrices O and E, the QWK is obtained as follows:

K = 1- \(\frac{\sum i,j{W}_{i,j}\,{O}_{i,j}}{\sum i,j{W}_{i,j}\,{E}_{i,j}}\)

The value of the quadratic weighted kappa increases as the level of agreement improves. Further, to assess the accuracy of LLM scoring, the proportional reductive mean square error (PRMSE) was employed. The PRMSE approach takes into account the variability observed in human ratings to estimate the rater error, which is then subtracted from the variance of the human labels. This calculation provides an overall measure of agreement between the automated scores and true scores (Haberman et al. 2015 ; Loukina et al. 2020 ; Taghipour and Ng, 2016 ). The computation of PRMSE involves the following steps:

Step 1: Calculate the mean squared errors (MSEs) for the scoring outcomes of the computer-assisted tool (MSE tool) and the human scoring outcomes (MSE human).

Step 2: Determine the PRMSE by comparing the MSE of the computer-assisted tool (MSE tool) with the MSE from human raters (MSE human), using the following formula:

\({\rm{PRMSE}}=1-\frac{({\rm{MSE}}\,{\rm{tool}})\,}{({\rm{MSE}}\,{\rm{human}})\,}=1-\,\frac{{\sum }_{i}^{n}=1{({{\rm{y}}}_{i}-{\hat{{\rm{y}}}}_{{\rm{i}}})}^{2}}{{\sum }_{i}^{n}=1{({{\rm{y}}}_{i}-\hat{{\rm{y}}})}^{2}}\)

In the numerator, ŷi represents the scoring outcome predicted by a specific LLM-driven AES system for a given sample. The term y i − ŷ i represents the difference between this predicted outcome and the mean value of all LLM-driven AES systems’ scoring outcomes. It quantifies the deviation of the specific LLM-driven AES system’s prediction from the average prediction of all LLM-driven AES systems. In the denominator, y i − ŷ represents the difference between the scoring outcome provided by a specific human rater for a given sample and the mean value of all human raters’ scoring outcomes. It measures the discrepancy between the specific human rater’s score and the average score given by all human raters. The PRMSE is then calculated by subtracting the ratio of the MSE tool to the MSE human from 1. PRMSE falls within the range of 0 to 1, with larger values indicating reduced errors in LLM’s scoring compared to those of human raters. In other words, a higher PRMSE implies that LLM’s scoring demonstrates greater accuracy in predicting the true scores (Loukina et al. 2020 ). The interpretation of kappa values, ranging from 0 to 1, is based on the work of Landis and Koch ( 1977 ). Specifically, the following categories are assigned to different ranges of kappa values: −1 indicates complete inconsistency, 0 indicates random agreement, 0.0 ~ 0.20 indicates extremely low level of agreement (slight), 0.21 ~ 0.40 indicates moderate level of agreement (fair), 0.41 ~ 0.60 indicates medium level of agreement (moderate), 0.61 ~ 0.80 indicates high level of agreement (substantial), 0.81 ~ 1 indicates almost perfect level of agreement. All statistical analyses were executed using Python script.

Results and discussion

Annotation reliability of the llm.

This section focuses on assessing the reliability of the LLM’s annotation and scoring capabilities. To evaluate the reliability, several tests were conducted simultaneously, aiming to achieve the following objectives:

Assess the LLM’s ability to differentiate between test takers with varying levels of oral proficiency.

Determine the level of agreement between the annotations and scoring performed by the LLM and those done by human raters.

The evaluation of the results encompassed several metrics, including: precision, recall, F-Score, quadratically-weighted kappa, proportional reduction of mean squared error, Pearson correlation, and multi-faceted Rasch measurement.

Inter-annotator agreement (human–human annotator agreement)

We started with an agreement test of the two human annotators. Two trained annotators were recruited to determine the writing task data measures. A total of 714 scripts, as the test data, was utilized. Each analysis lasted 300–360 min. Inter-annotator agreement was evaluated using the standard measures of precision, recall, and F-score and QWK. Table 7 presents the inter-annotator agreement for the various indicators. As shown, the inter-annotator agreement was fairly high, with F-scores ranging from 1.0 for sentence and word number to 0.666 for grammatical errors.

The findings from the QWK analysis provided further confirmation of the inter-annotator agreement. The QWK values covered a range from 0.950 ( p  = 0.000) for sentence and word number to 0.695 for synonym overlap number (keyword) and grammatical errors ( p  = 0.001).

Agreement of annotation outcomes between human and LLM

To evaluate the consistency between human annotators and LLM annotators (BERT, GPT, OCLL) across the indices, the same test was conducted. The results of the inter-annotator agreement (F-score) between LLM and human annotation are provided in Appendix B-D. The F-scores ranged from 0.706 for Grammatical error # for OCLL-human to a perfect 1.000 for GPT-human, for sentences, clauses, T-units, and words. These findings were further supported by the QWK analysis, which showed agreement levels ranging from 0.807 ( p  = 0.001) for metadiscourse markers for OCLL-human to 0.962 for words ( p  = 0.000) for GPT-human. The findings demonstrated that the LLM annotation achieved a significant level of accuracy in identifying measurement units and counts.

Reliability of LLM-driven AES’s scoring and discriminating proficiency levels

This section examines the reliability of the LLM-driven AES scoring through a comparison of the scoring outcomes produced by human raters and the LLM ( Reliability of LLM-driven AES scoring ). It also assesses the effectiveness of the LLM-based AES system in differentiating participants with varying proficiency levels ( Reliability of LLM-driven AES discriminating proficiency levels ).

Reliability of LLM-driven AES scoring

Table 8 summarizes the QWK coefficient analysis between the scores computed by the human raters and the GPT-4 for the individual essays from I-JAS Footnote 7 . As shown, the QWK of all measures ranged from k  = 0.819 for lexical density (number of lexical words (tokens)/number of words per essay) to k  = 0.644 for word2vec cosine similarity. Table 9 further presents the Pearson correlations between the 16 writing proficiency measures scored by human raters and GPT 4 for the individual essays. The correlations ranged from 0.672 for syntactic complexity to 0.734 for grammatical accuracy. The correlations between the writing proficiency scores assigned by human raters and the BERT-based AES system were found to range from 0.661 for syntactic complexity to 0.713 for grammatical accuracy. The correlations between the writing proficiency scores given by human raters and the OCLL-based AES system ranged from 0.654 for cohesion to 0.721 for grammatical accuracy. These findings indicated an alignment between the assessments made by human raters and both the BERT-based and OCLL-based AES systems in terms of various aspects of writing proficiency.

Reliability of LLM-driven AES discriminating proficiency levels

After validating the reliability of the LLM’s annotation and scoring, the subsequent objective was to evaluate its ability to distinguish between various proficiency levels. For this analysis, a dataset of 686 individual essays was utilized. Table 10 presents a sample of the results, summarizing the means, standard deviations, and the outcomes of the one-way ANOVAs based on the measures assessed by the GPT-4 model. A post hoc multiple comparison test, specifically the Bonferroni test, was conducted to identify any potential differences between pairs of levels.

As the results reveal, seven measures presented linear upward or downward progress across the three proficiency levels. These were marked in bold in Table 10 and comprise one measure of lexical richness, i.e. MATTR (lexical diversity); four measures of syntactic complexity, i.e. MDD (mean dependency distance), MLC (mean length of clause), CNT (complex nominals per T-unit), CPC (coordinate phrases rate); one cohesion measure, i.e. word2vec cosine similarity and GER (grammatical error rate). Regarding the ability of the sixteen measures to distinguish adjacent proficiency levels, the Bonferroni tests indicated that statistically significant differences exist between the primary level and the intermediate level for MLC and GER. One measure of lexical richness, namely LD, along with three measures of syntactic complexity (VPT, CT, DCT, ACC), two measures of cohesion (SOPT, SOPK), and one measure of content elaboration (IMM), exhibited statistically significant differences between proficiency levels. However, these differences did not demonstrate a linear progression between adjacent proficiency levels. No significant difference was observed in lexical sophistication between proficiency levels.

To summarize, our study aimed to evaluate the reliability and differentiation capabilities of the LLM-driven AES method. For the first objective, we assessed the LLM’s ability to differentiate between test takers with varying levels of oral proficiency using precision, recall, F-Score, and quadratically-weighted kappa. Regarding the second objective, we compared the scoring outcomes generated by human raters and the LLM to determine the level of agreement. We employed quadratically-weighted kappa and Pearson correlations to compare the 16 writing proficiency measures for the individual essays. The results confirmed the feasibility of using the LLM for annotation and scoring in AES for nonnative Japanese. As a result, Research Question 1 has been addressed.

Comparison of BERT-, GPT-, OCLL-based AES, and linguistic-feature-based computation methods

This section aims to compare the effectiveness of five AES methods for nonnative Japanese writing, i.e. LLM-driven approaches utilizing BERT, GPT, and OCLL, linguistic feature-based approaches using Jess and JWriter. The comparison was conducted by comparing the ratings obtained from each approach with human ratings. All ratings were derived from the dataset introduced in Dataset . To facilitate the comparison, the agreement between the automated methods and human ratings was assessed using QWK and PRMSE. The performance of each approach was summarized in Table 11 .

The QWK coefficient values indicate that LLMs (GPT, BERT, OCLL) and human rating outcomes demonstrated higher agreement compared to feature-based AES methods (Jess and JWriter) in assessing writing proficiency criteria, including lexical richness, syntactic complexity, content, and grammatical accuracy. Among the LLMs, the GPT-4 driven AES and human rating outcomes showed the highest agreement in all criteria, except for syntactic complexity. The PRMSE values suggest that the GPT-based method outperformed linguistic feature-based methods and other LLM-based approaches. Moreover, an interesting finding emerged during the study: the agreement coefficient between GPT-4 and human scoring was even higher than the agreement between different human raters themselves. This discovery highlights the advantage of GPT-based AES over human rating. Ratings involve a series of processes, including reading the learners’ writing, evaluating the content and language, and assigning scores. Within this chain of processes, various biases can be introduced, stemming from factors such as rater biases, test design, and rating scales. These biases can impact the consistency and objectivity of human ratings. GPT-based AES may benefit from its ability to apply consistent and objective evaluation criteria. By prompting the GPT model with detailed writing scoring rubrics and linguistic features, potential biases in human ratings can be mitigated. The model follows a predefined set of guidelines and does not possess the same subjective biases that human raters may exhibit. This standardization in the evaluation process contributes to the higher agreement observed between GPT-4 and human scoring. Section Prompt strategy of the study delves further into the role of prompts in the application of LLMs to AES. It explores how the choice and implementation of prompts can impact the performance and reliability of LLM-based AES methods. Furthermore, it is important to acknowledge the strengths of the local model, i.e. the Japanese local model OCLL, which excels in processing certain idiomatic expressions. Nevertheless, our analysis indicated that GPT-4 surpasses local models in AES. This superior performance can be attributed to the larger parameter size of GPT-4, estimated to be between 500 billion and 1 trillion, which exceeds the sizes of both BERT and the local model OCLL.

Prompt strategy

In the context of prompt strategy, Mizumoto and Eguchi ( 2023 ) conducted a study where they applied the GPT-3 model to automatically score English essays in the TOEFL test. They found that the accuracy of the GPT model alone was moderate to fair. However, when they incorporated linguistic measures such as cohesion, syntactic complexity, and lexical features alongside the GPT model, the accuracy significantly improved. This highlights the importance of prompt engineering and providing the model with specific instructions to enhance its performance. In this study, a similar approach was taken to optimize the performance of LLMs. GPT-4, which outperformed BERT and OCLL, was selected as the candidate model. Model 1 was used as the baseline, representing GPT-4 without any additional prompting. Model 2, on the other hand, involved GPT-4 prompted with 16 measures that included scoring criteria, efficient linguistic features for writing assessment, and detailed measurement units and calculation formulas. The remaining models (Models 3 to 18) utilized GPT-4 prompted with individual measures. The performance of these 18 different models was assessed using the output indicators described in Section Criteria (output indicator) . By comparing the performances of these models, the study aimed to understand the impact of prompt engineering on the accuracy and effectiveness of GPT-4 in AES tasks.

Based on the PRMSE scores presented in Fig. 4 , it was observed that Model 1, representing GPT-4 without any additional prompting, achieved a fair level of performance. However, Model 2, which utilized GPT-4 prompted with all measures, outperformed all other models in terms of PRMSE score, achieving a score of 0.681. These results indicate that the inclusion of specific measures and prompts significantly enhanced the performance of GPT-4 in AES. Among the measures, syntactic complexity was found to play a particularly significant role in improving the accuracy of GPT-4 in assessing writing quality. Following that, lexical diversity emerged as another important factor contributing to the model’s effectiveness. The study suggests that a well-prompted GPT-4 can serve as a valuable tool to support human assessors in evaluating writing quality. By utilizing GPT-4 as an automated scoring tool, the evaluation biases associated with human raters can be minimized. This has the potential to empower teachers by allowing them to focus on designing writing tasks and guiding writing strategies, while leveraging the capabilities of GPT-4 for efficient and reliable scoring.

PRMSE scores of the 18 AES models.

This study aimed to investigate two main research questions: the feasibility of utilizing LLMs for AES and the impact of prompt engineering on the application of LLMs in AES.

To address the first objective, the study compared the effectiveness of five different models: GPT, BERT, the Japanese local LLM (OCLL), and two conventional machine learning-based AES tools (Jess and JWriter). The PRMSE values indicated that the GPT-4-based method outperformed other LLMs (BERT, OCLL) and linguistic feature-based computational methods (Jess and JWriter) across various writing proficiency criteria. Furthermore, the agreement coefficient between GPT-4 and human scoring surpassed the agreement among human raters themselves, highlighting the potential of using the GPT-4 tool to enhance AES by reducing biases and subjectivity, saving time, labor, and cost, and providing valuable feedback for self-study. Regarding the second goal, the role of prompt design was investigated by comparing 18 models, including a baseline model, a model prompted with all measures, and 16 models prompted with one measure at a time. GPT-4, which outperformed BERT and OCLL, was selected as the candidate model. The PRMSE scores of the models showed that GPT-4 prompted with all measures achieved the best performance, surpassing the baseline and other models.

In conclusion, this study has demonstrated the potential of LLMs in supporting human rating in assessments. By incorporating automation, we can save time and resources while reducing biases and subjectivity inherent in human rating processes. Automated language assessments offer the advantage of accessibility, providing equal opportunities and economic feasibility for individuals who lack access to traditional assessment centers or necessary resources. LLM-based language assessments provide valuable feedback and support to learners, aiding in the enhancement of their language proficiency and the achievement of their goals. This personalized feedback can cater to individual learner needs, facilitating a more tailored and effective language-learning experience.

There are three important areas that merit further exploration. First, prompt engineering requires attention to ensure optimal performance of LLM-based AES across different language types. This study revealed that GPT-4, when prompted with all measures, outperformed models prompted with fewer measures. Therefore, investigating and refining prompt strategies can enhance the effectiveness of LLMs in automated language assessments. Second, it is crucial to explore the application of LLMs in second-language assessment and learning for oral proficiency, as well as their potential in under-resourced languages. Recent advancements in self-supervised machine learning techniques have significantly improved automatic speech recognition (ASR) systems, opening up new possibilities for creating reliable ASR systems, particularly for under-resourced languages with limited data. However, challenges persist in the field of ASR. First, ASR assumes correct word pronunciation for automatic pronunciation evaluation, which proves challenging for learners in the early stages of language acquisition due to diverse accents influenced by their native languages. Accurately segmenting short words becomes problematic in such cases. Second, developing precise audio-text transcriptions for languages with non-native accented speech poses a formidable task. Last, assessing oral proficiency levels involves capturing various linguistic features, including fluency, pronunciation, accuracy, and complexity, which are not easily captured by current NLP technology.

Data availability

The dataset utilized was obtained from the International Corpus of Japanese as a Second Language (I-JAS). The data URLs: [ https://www2.ninjal.ac.jp/jll/lsaj/ihome2.html ].

J-CAT and TTBJ are two computerized adaptive tests used to assess Japanese language proficiency.

SPOT is a specific component of the TTBJ test.

J-CAT: https://www.j-cat2.org/html/ja/pages/interpret.html

SPOT: https://ttbj.cegloc.tsukuba.ac.jp/p1.html#SPOT .

The study utilized a prompt-based GPT-4 model, developed by OpenAI, which has an impressive architecture with 1.8 trillion parameters across 120 layers. GPT-4 was trained on a vast dataset of 13 trillion tokens, using two stages: initial training on internet text datasets to predict the next token, and subsequent fine-tuning through reinforcement learning from human feedback.

https://www2.ninjal.ac.jp/jll/lsaj/ihome2-en.html .

http://jhlee.sakura.ne.jp/JEV/ by Japanese Learning Dictionary Support Group 2015.

We express our sincere gratitude to the reviewer for bringing this matter to our attention.

On February 7, 2023, Microsoft began rolling out a major overhaul to Bing that included a new chatbot feature based on OpenAI’s GPT-4 (Bing.com).

Appendix E-F present the analysis results of the QWK coefficient between the scores computed by the human raters and the BERT, OCLL models.

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This research was funded by National Foundation of Social Sciences (22BYY186) to Wenchao Li.

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Wenchao Li is in charge of conceptualization, validation, formal analysis, investigation, data curation, visualization and writing the draft. Haitao Liu is in charge of supervision.

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Li, W., Liu, H. Applying large language models for automated essay scoring for non-native Japanese. Humanit Soc Sci Commun 11 , 723 (2024). https://doi.org/10.1057/s41599-024-03209-9

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Received : 02 February 2024

Accepted : 16 May 2024

Published : 03 June 2024

DOI : https://doi.org/10.1057/s41599-024-03209-9

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