purpose of a thesis meaning

Thesis and Purpose Statements

Use the guidelines below to learn the differences between thesis and purpose statements.

In the first stages of writing, thesis or purpose statements are usually rough or ill-formed and are useful primarily as planning tools.

A thesis statement or purpose statement will emerge as you think and write about a topic. The statement can be restricted or clarified and eventually worked into an introduction.

As you revise your paper, try to phrase your thesis or purpose statement in a precise way so that it matches the content and organization of your paper.

Thesis statements

A thesis statement is a sentence that makes an assertion about a topic and predicts how the topic will be developed. It does not simply announce a topic: it says something about the topic.

Good: X has made a significant impact on the teenage population due to its . . . Bad: In this paper, I will discuss X.

A thesis statement makes a promise to the reader about the scope, purpose, and direction of the paper. It summarizes the conclusions that the writer has reached about the topic.

A thesis statement is generally located near the end of the introduction. Sometimes in a long paper, the thesis will be expressed in several sentences or an entire paragraph.

A thesis statement is focused and specific enough to be proven within the boundaries of the paper. Key words (nouns and verbs) should be specific, accurate, and indicative of the range of research, thrust of the argument or analysis, and the organization of supporting information.

Purpose statements

A purpose statement announces the purpose, scope, and direction of the paper. It tells the reader what to expect in a paper and what the specific focus will be.

Common beginnings include:

“This paper examines . . .,” “The aim of this paper is to . . .,” and “The purpose of this essay is to . . .”

A purpose statement makes a promise to the reader about the development of the argument but does not preview the particular conclusions that the writer has drawn.

A purpose statement usually appears toward the end of the introduction. The purpose statement may be expressed in several sentences or even an entire paragraph.

A purpose statement is specific enough to satisfy the requirements of the assignment. Purpose statements are common in research papers in some academic disciplines, while in other disciplines they are considered too blunt or direct. If you are unsure about using a purpose statement, ask your instructor.

This paper will examine the ecological destruction of the Sahel preceding the drought and the causes of this disintegration of the land. The focus will be on the economic, political, and social relationships which brought about the environmental problems in the Sahel.

Sample purpose and thesis statements

The following example combines a purpose statement and a thesis statement (bold).

The goal of this paper is to examine the effects of Chile’s agrarian reform on the lives of rural peasants. The nature of the topic dictates the use of both a chronological and a comparative analysis of peasant lives at various points during the reform period. . . The Chilean reform example provides evidence that land distribution is an essential component of both the improvement of peasant conditions and the development of a democratic society. More extensive and enduring reforms would likely have allowed Chile the opportunity to further expand these horizons.

For more tips about writing thesis statements, take a look at our new handout on Developing a Thesis Statement.

Writing Process and Structure

This is an accordion element with a series of buttons that open and close related content panels.

Getting Started with Your Paper

Interpreting Writing Assignments from Your Courses

Generating Ideas for Your Paper

Creating an Argument

Thesis vs. Purpose Statements

Developing a Thesis Statement

Architecture of Arguments

Working with Sources

Quoting and Paraphrasing Sources

Using Literary Quotations

Citing Sources in Your Paper

Drafting Your Paper

Introductions

Paragraphing

Developing Strategic Transitions

Conclusions

Revising Your Paper

Peer Reviews

Reverse Outlines

Revising an Argumentative Paper

Revision Strategies for Longer Projects

Finishing Your Paper

Twelve Common Errors: An Editing Checklist

How to Proofread your Paper

Writing Collaboratively

Collaborative and Group Writing

While Sandel argues that pursuing perfection through genetic engineering would decrease our sense of humility, he claims that the sense of solidarity we would lose is also important.

This thesis summarizes several points in Sandel’s argument, but it does not make a claim about how we should understand his argument. A reader who read Sandel’s argument would not also need to read an essay based on this descriptive thesis.  

Broad thesis (arguable, but difficult to support with evidence) 

Michael Sandel’s arguments about genetic engineering do not take into consideration all the relevant issues.

This is an arguable claim because it would be possible to argue against it by saying that Michael Sandel’s arguments do take all of the relevant issues into consideration. But the claim is too broad. Because the thesis does not specify which “issues” it is focused on—or why it matters if they are considered—readers won’t know what the rest of the essay will argue, and the writer won’t know what to focus on. If there is a particular issue that Sandel does not address, then a more specific version of the thesis would include that issue—hand an explanation of why it is important.  

Arguable thesis with analytical claim 

While Sandel argues persuasively that our instinct to “remake” (54) ourselves into something ever more perfect is a problem, his belief that we can always draw a line between what is medically necessary and what makes us simply “better than well” (51) is less convincing.

This is an arguable analytical claim. To argue for this claim, the essay writer will need to show how evidence from the article itself points to this interpretation. It’s also a reasonable scope for a thesis because it can be supported with evidence available in the text and is neither too broad nor too narrow.  

Arguable thesis with normative claim 

Given Sandel’s argument against genetic enhancement, we should not allow parents to decide on using Human Growth Hormone for their children.

This thesis tells us what we should do about a particular issue discussed in Sandel’s article, but it does not tell us how we should understand Sandel’s argument.  

Questions to ask about your thesis 

• Is the thesis truly arguable? Does it speak to a genuine dilemma in the source, or would most readers automatically agree with it?  
• Is the thesis too obvious? Again, would most or all readers agree with it without needing to see your argument?  
• Is the thesis complex enough to require a whole essay's worth of argument?  
• Is the thesis supportable with evidence from the text rather than with generalizations or outside research?  
• Would anyone want to read a paper in which this thesis was developed? That is, can you explain what this paper is adding to our understanding of a problem, question, or topic?
• picture_as_pdf Thesis

Reference management. Clean and simple.

What is a thesis statement? [with example]

What is a thesis statement?

Purpose of a thesis statement, how to write the best thesis statement, thesis statement example, frequently asked questions about thesis statements, related articles.

A thesis statement is a concise description of the goal of your work. This element is one of the most essential components of academic writing , as it tells your readers what they can expect in your paper.

A thesis statement is the main argument of your paper or thesis.

If you find yourself in the process of writing a a paper, but you don't know how to create a thesis statement , you've come to the right place. In the next paragraphs, you will learn about the most important elements of a thesis statement and how to come up with one.

A thesis statement highlights the main topic, shows how it will evolve, and conveys clearly the aim of your work. It does not only share the topic but it conveys the conclusion you came up with.

A good thesis statement provides directions for the development of the topic throughout the paper. In sum, this element of academic writing is crucial to sound research .

You can create a great thesis statement by following the format we outlined in our guide How to write a thesis statement .

In general, you should adhere to the following tips to write the best thesis statement:

• Focus the main idea of your thesis into one or two sentences.
• Write the answer to the main question of your topic.
• Clearly state your position in relation to the topic.
• Do not state the obvious. Give a disputable stance that requires evidence.

Tip: To check if your thesis is clear, explain it to a peer or colleague. If they are confused, then you likely need to re-write it.

Here's an example of a thesis statement:

In what follows, I will explore Fiorina’s position in more depth, focusing especially on her claim that technology is "a great tool for democratization." Ultimately, I argue that the primary problem with Fiorina’s stance lies in her laissez-faire understanding of technology. By granting technology a kind of independent existence apart from human motivation and intent—by positing that "technology permits anybody to play," as if it possesses an autonomy all its own—Fiorina unwittingly opens the way for the very kind of discriminatory and undemocratic mechanisms that her position seemingly rejects.

Tip: Once you finish your paper, return to your thesis statement to make sure that it reflects what you actually wrote.

A thesis statement is part of the introduction of your paper. It is usually found in the first or second paragraph to let the reader know your research purpose from the beginning.

In general, a thesis statement should have one or two sentences. It really depends on your academic and expertise level. Take a look at our guide about the length of thesis statements, for more insight on this topic.

Here is a list of Thesis Statement Examples that will help you understand better how to write them.

Yes. Every good essay should include a thesis statement as part of its introduction. Of course, if you are a high school student you are not expected to have an extremely elaborate statement. A couple of clear sentences indicating the aim of your essay will be more than enough.

Here is a great YouTube tutorial showing How To Write An Essay: Thesis Statements .

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What is a thesis statement?

A thesis statement is an essential component of ALL academic and research writing.

A thesis statement:

• occurs early in a piece of written work (introduction)
• tells the reader what the purpose and scope of the work will be
• provides more than a mere description of the topic
• puts a ‘wager’ (i.e. a bet) on the topic by telling us what the significance of the research will be
• defines what will be investigated and what they think will be found (note, it’s OK if the hypothesis is disproven once the data is in)

Descriptive thesis statements

Beware thesis statements that are too descriptive because they “do not investigate anything, critique anything, or analyze anything […] they also do not invite support and argument from outside of the central text” ( UW Expository Writing Program, 2007, p. 2). The problem with thesis statements that are merely descriptive is that they lack a ‘stance’ or an argument. They are therefore difficult to support with evidence and to build an argument for.

The examples below would not make good thesis statements because they are too descriptive.

a) Shakespeare was a famous playwright during the Elizabethan era. He wrote numerous plays and poems.

b) Almost one in two marriages in Australia end in divorce. That means the divorce rate is almost 50%.

c) Covid-19 was a virus that caused an epidemic in the early 2020’s.

Check your understanding

Where is the thesis statement in the passage below?

My intention was to investigate and portray Antarctica through my own and others’ personal experiences, through historical examples of jewellery and souvenirs and through experimentation in the studio-based manufacture of new jewellery and souvenirs [e] . The objects produced through this research would reference the valued jewellery and souvenirs now displayed in museums as historical artefacts which were once personal mementos [f] . I was particularly interested in the potential of these objects to represent personal narratives and experiences of the past [g] . In this research project I have explored some of the ways in which I can make objects, specifically jewellery and souvenirs that draw on this rich heritage to present Antarctica in an innovative way [h] .

Excerpt from Kirsten Haydon’s dissertation Antarctic landscapes in the souvenir and jewellery (used with permission)

Research and Writing Skills for Academic and Graduate Researchers Copyright © 2022 by RMIT University is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License , except where otherwise noted.

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