Developing a Thesis Statement

Many papers you write require developing a thesis statement. In this section you’ll learn what a thesis statement is and how to write one.

Keep in mind that not all papers require thesis statements . If in doubt, please consult your instructor for assistance.

What is a thesis statement?

A thesis statement . . .

  • Makes an argumentative assertion about a topic; it states the conclusions that you have reached about your topic.
  • Makes a promise to the reader about the scope, purpose, and direction of your paper.
  • Is focused and specific enough to be “proven” within the boundaries of your paper.
  • Is generally located near the end of the introduction ; sometimes, in a long paper, the thesis will be expressed in several sentences or in an entire paragraph.
  • Identifies the relationships between the pieces of evidence that you are using to support your argument.

Not all papers require thesis statements! Ask your instructor if you’re in doubt whether you need one.

Identify a topic

Your topic is the subject about which you will write. Your assignment may suggest several ways of looking at a topic; or it may name a fairly general concept that you will explore or analyze in your paper.

Consider what your assignment asks you to do

Inform yourself about your topic, focus on one aspect of your topic, ask yourself whether your topic is worthy of your efforts, generate a topic from an assignment.

Below are some possible topics based on sample assignments.

Sample assignment 1

Analyze Spain’s neutrality in World War II.

Identified topic

Franco’s role in the diplomatic relationships between the Allies and the Axis

This topic avoids generalities such as “Spain” and “World War II,” addressing instead on Franco’s role (a specific aspect of “Spain”) and the diplomatic relations between the Allies and Axis (a specific aspect of World War II).

Sample assignment 2

Analyze one of Homer’s epic similes in the Iliad.

The relationship between the portrayal of warfare and the epic simile about Simoisius at 4.547-64.

This topic focuses on a single simile and relates it to a single aspect of the Iliad ( warfare being a major theme in that work).

Developing a Thesis Statement–Additional information

Your assignment may suggest several ways of looking at a topic, or it may name a fairly general concept that you will explore or analyze in your paper. You’ll want to read your assignment carefully, looking for key terms that you can use to focus your topic.

Sample assignment: Analyze Spain’s neutrality in World War II Key terms: analyze, Spain’s neutrality, World War II

After you’ve identified the key words in your topic, the next step is to read about them in several sources, or generate as much information as possible through an analysis of your topic. Obviously, the more material or knowledge you have, the more possibilities will be available for a strong argument. For the sample assignment above, you’ll want to look at books and articles on World War II in general, and Spain’s neutrality in particular.

As you consider your options, you must decide to focus on one aspect of your topic. This means that you cannot include everything you’ve learned about your topic, nor should you go off in several directions. If you end up covering too many different aspects of a topic, your paper will sprawl and be unconvincing in its argument, and it most likely will not fulfull the assignment requirements.

For the sample assignment above, both Spain’s neutrality and World War II are topics far too broad to explore in a paper. You may instead decide to focus on Franco’s role in the diplomatic relationships between the Allies and the Axis , which narrows down what aspects of Spain’s neutrality and World War II you want to discuss, as well as establishes a specific link between those two aspects.

Before you go too far, however, ask yourself whether your topic is worthy of your efforts. Try to avoid topics that already have too much written about them (i.e., “eating disorders and body image among adolescent women”) or that simply are not important (i.e. “why I like ice cream”). These topics may lead to a thesis that is either dry fact or a weird claim that cannot be supported. A good thesis falls somewhere between the two extremes. To arrive at this point, ask yourself what is new, interesting, contestable, or controversial about your topic.

As you work on your thesis, remember to keep the rest of your paper in mind at all times . Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Derive a main point from topic

Once you have a topic, you will have to decide what the main point of your paper will be. This point, the “controlling idea,” becomes the core of your argument (thesis statement) and it is the unifying idea to which you will relate all your sub-theses. You can then turn this “controlling idea” into a purpose statement about what you intend to do in your paper.

Look for patterns in your evidence

Compose a purpose statement.

Consult the examples below for suggestions on how to look for patterns in your evidence and construct a purpose statement.

  • Franco first tried to negotiate with the Axis
  • Franco turned to the Allies when he couldn’t get some concessions that he wanted from the Axis

Possible conclusion:

Spain’s neutrality in WWII occurred for an entirely personal reason: Franco’s desire to preserve his own (and Spain’s) power.

Purpose statement

This paper will analyze Franco’s diplomacy during World War II to see how it contributed to Spain’s neutrality.
  • The simile compares Simoisius to a tree, which is a peaceful, natural image.
  • The tree in the simile is chopped down to make wheels for a chariot, which is an object used in warfare.

At first, the simile seems to take the reader away from the world of warfare, but we end up back in that world by the end.

This paper will analyze the way the simile about Simoisius at 4.547-64 moves in and out of the world of warfare.

Derive purpose statement from topic

To find out what your “controlling idea” is, you have to examine and evaluate your evidence . As you consider your evidence, you may notice patterns emerging, data repeated in more than one source, or facts that favor one view more than another. These patterns or data may then lead you to some conclusions about your topic and suggest that you can successfully argue for one idea better than another.

For instance, you might find out that Franco first tried to negotiate with the Axis, but when he couldn’t get some concessions that he wanted from them, he turned to the Allies. As you read more about Franco’s decisions, you may conclude that Spain’s neutrality in WWII occurred for an entirely personal reason: his desire to preserve his own (and Spain’s) power. Based on this conclusion, you can then write a trial thesis statement to help you decide what material belongs in your paper.

Sometimes you won’t be able to find a focus or identify your “spin” or specific argument immediately. Like some writers, you might begin with a purpose statement just to get yourself going. A purpose statement is one or more sentences that announce your topic and indicate the structure of the paper but do not state the conclusions you have drawn . Thus, you might begin with something like this:

  • This paper will look at modern language to see if it reflects male dominance or female oppression.
  • I plan to analyze anger and derision in offensive language to see if they represent a challenge of society’s authority.

At some point, you can turn a purpose statement into a thesis statement. As you think and write about your topic, you can restrict, clarify, and refine your argument, crafting your thesis statement to reflect your thinking.

As you work on your thesis, remember to keep the rest of your paper in mind at all times. Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Compose a draft thesis statement

If you are writing a paper that will have an argumentative thesis and are having trouble getting started, the techniques in the table below may help you develop a temporary or “working” thesis statement.

Begin with a purpose statement that you will later turn into a thesis statement.

Assignment: Discuss the history of the Reform Party and explain its influence on the 1990 presidential and Congressional election.

Purpose Statement: This paper briefly sketches the history of the grassroots, conservative, Perot-led Reform Party and analyzes how it influenced the economic and social ideologies of the two mainstream parties.

Question-to-Assertion

If your assignment asks a specific question(s), turn the question(s) into an assertion and give reasons why it is true or reasons for your opinion.

Assignment : What do Aylmer and Rappaccini have to be proud of? Why aren’t they satisfied with these things? How does pride, as demonstrated in “The Birthmark” and “Rappaccini’s Daughter,” lead to unexpected problems?

Beginning thesis statement: Alymer and Rappaccinni are proud of their great knowledge; however, they are also very greedy and are driven to use their knowledge to alter some aspect of nature as a test of their ability. Evil results when they try to “play God.”

Write a sentence that summarizes the main idea of the essay you plan to write.

Main idea: The reason some toys succeed in the market is that they appeal to the consumers’ sense of the ridiculous and their basic desire to laugh at themselves.

Make a list of the ideas that you want to include; consider the ideas and try to group them.

  • nature = peaceful
  • war matériel = violent (competes with 1?)
  • need for time and space to mourn the dead
  • war is inescapable (competes with 3?)

Use a formula to arrive at a working thesis statement (you will revise this later).

  • although most readers of _______ have argued that _______, closer examination shows that _______.
  • _______ uses _______ and _____ to prove that ________.
  • phenomenon x is a result of the combination of __________, __________, and _________.

What to keep in mind as you draft an initial thesis statement

Beginning statements obtained through the methods illustrated above can serve as a framework for planning or drafting your paper, but remember they’re not yet the specific, argumentative thesis you want for the final version of your paper. In fact, in its first stages, a thesis statement usually is ill-formed or rough and serves only as a planning tool.

As you write, you may discover evidence that does not fit your temporary or “working” thesis. Or you may reach deeper insights about your topic as you do more research, and you will find that your thesis statement has to be more complicated to match the evidence that you want to use.

You must be willing to reject or omit some evidence in order to keep your paper cohesive and your reader focused. Or you may have to revise your thesis to match the evidence and insights that you want to discuss. Read your draft carefully, noting the conclusions you have drawn and the major ideas which support or prove those conclusions. These will be the elements of your final thesis statement.

Sometimes you will not be able to identify these elements in your early drafts, but as you consider how your argument is developing and how your evidence supports your main idea, ask yourself, “ What is the main point that I want to prove/discuss? ” and “ How will I convince the reader that this is true? ” When you can answer these questions, then you can begin to refine the thesis statement.

Refine and polish the thesis statement

To get to your final thesis, you’ll need to refine your draft thesis so that it’s specific and arguable.

  • Ask if your draft thesis addresses the assignment
  • Question each part of your draft thesis
  • Clarify vague phrases and assertions
  • Investigate alternatives to your draft thesis

Consult the example below for suggestions on how to refine your draft thesis statement.

Sample Assignment

Choose an activity and define it as a symbol of American culture. Your essay should cause the reader to think critically about the society which produces and enjoys that activity.

  • Ask The phenomenon of drive-in facilities is an interesting symbol of american culture, and these facilities demonstrate significant characteristics of our society.This statement does not fulfill the assignment because it does not require the reader to think critically about society.
Drive-ins are an interesting symbol of American culture because they represent Americans’ significant creativity and business ingenuity.
Among the types of drive-in facilities familiar during the twentieth century, drive-in movie theaters best represent American creativity, not merely because they were the forerunner of later drive-ins and drive-throughs, but because of their impact on our culture: they changed our relationship to the automobile, changed the way people experienced movies, and changed movie-going into a family activity.
While drive-in facilities such as those at fast-food establishments, banks, pharmacies, and dry cleaners symbolize America’s economic ingenuity, they also have affected our personal standards.
While drive-in facilities such as those at fast- food restaurants, banks, pharmacies, and dry cleaners symbolize (1) Americans’ business ingenuity, they also have contributed (2) to an increasing homogenization of our culture, (3) a willingness to depersonalize relationships with others, and (4) a tendency to sacrifice quality for convenience.

This statement is now specific and fulfills all parts of the assignment. This version, like any good thesis, is not self-evident; its points, 1-4, will have to be proven with evidence in the body of the paper. The numbers in this statement indicate the order in which the points will be presented. Depending on the length of the paper, there could be one paragraph for each numbered item or there could be blocks of paragraph for even pages for each one.

Complete the final thesis statement

The bottom line.

As you move through the process of crafting a thesis, you’ll need to remember four things:

  • Context matters! Think about your course materials and lectures. Try to relate your thesis to the ideas your instructor is discussing.
  • As you go through the process described in this section, always keep your assignment in mind . You will be more successful when your thesis (and paper) responds to the assignment than if it argues a semi-related idea.
  • Your thesis statement should be precise, focused, and contestable ; it should predict the sub-theses or blocks of information that you will use to prove your argument.
  • Make sure that you keep the rest of your paper in mind at all times. Change your thesis as your paper evolves, because you do not want your thesis to promise more than your paper actually delivers.

In the beginning, the thesis statement was a tool to help you sharpen your focus, limit material and establish the paper’s purpose. When your paper is finished, however, the thesis statement becomes a tool for your reader. It tells the reader what you have learned about your topic and what evidence led you to your conclusion. It keeps the reader on track–well able to understand and appreciate your argument.

should a thesis statement have evidence

Writing Process and Structure

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Getting Started with Your Paper

Interpreting Writing Assignments from Your Courses

Generating Ideas for

Creating an Argument

Thesis vs. Purpose Statements

Architecture of Arguments

Working with Sources

Quoting and Paraphrasing Sources

Using Literary Quotations

Citing Sources in Your Paper

Drafting Your Paper

Generating Ideas for 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

Reference management. Clean and simple.

How to write a thesis statement + examples

Thesis statement

What is a thesis statement?

Is a thesis statement a question, how do you write a good thesis statement, how do i know if my thesis statement is good, examples of thesis statements, helpful resources on how to write a thesis statement, frequently asked questions about writing a thesis statement, related articles.

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

The thesis statement is one of the most important elements of any piece of academic writing . It is a brief statement of your paper’s main argument. Essentially, you are stating what you will be writing about.

You can see your thesis statement as an answer to a question. While it also contains the question, it should really give an answer to the question with new information and not just restate or reiterate it.

Your thesis statement is part of your introduction. Learn more about how to write a good thesis introduction in our introduction guide .

A thesis statement is not a question. A statement must be arguable and provable through evidence and analysis. While your thesis might stem from a research question, it should be in the form of a statement.

Tip: A thesis statement is typically 1-2 sentences. For a longer project like a thesis, the statement may be several sentences or a paragraph.

A good thesis statement needs to do the following:

  • Condense the main idea of your thesis into one or two sentences.
  • Answer your project’s main research question.
  • Clearly state your position in relation to the topic .
  • Make an argument that requires support or evidence.

Once you have written down a thesis statement, check if it fulfills the following criteria:

  • Your statement needs to be provable by evidence. As an argument, a thesis statement needs to be debatable.
  • Your statement needs to be precise. Do not give away too much information in the thesis statement and do not load it with unnecessary information.
  • Your statement cannot say that one solution is simply right or simply wrong as a matter of fact. You should draw upon verified facts to persuade the reader of your solution, but you cannot just declare something as right or wrong.

As previously mentioned, your thesis statement should answer a question.

If the question is:

What do you think the City of New York should do to reduce traffic congestion?

A good thesis statement restates the question and answers it:

In this paper, I will argue that the City of New York should focus on providing exclusive lanes for public transport and adaptive traffic signals to reduce traffic congestion by the year 2035.

Here is another example. If the question is:

How can we end poverty?

A good thesis statement should give more than one solution to the problem in question:

In this paper, I will argue that introducing universal basic income can help reduce poverty and positively impact the way we work.

  • The Writing Center of the University of North Carolina has a list of questions to ask to see if your thesis is strong .

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. But the length really depends on the overall length of your project. 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.

Every good essay should include a thesis statement as part of its introduction, no matter the academic level. Of course, if you are a high school student you are not expected to have the same type of thesis as a PhD student.

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

should a thesis statement have evidence

should a thesis statement have evidence

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Writing a Paper: Thesis Statements

Basics of thesis statements.

The thesis statement is the brief articulation of your paper's central argument and purpose. You might hear it referred to as simply a "thesis." Every scholarly paper should have a thesis statement, and strong thesis statements are concise, specific, and arguable. Concise means the thesis is short: perhaps one or two sentences for a shorter paper. Specific means the thesis deals with a narrow and focused topic, appropriate to the paper's length. Arguable means that a scholar in your field could disagree (or perhaps already has!).

Strong thesis statements address specific intellectual questions, have clear positions, and use a structure that reflects the overall structure of the paper. Read on to learn more about constructing a strong thesis statement.

Being Specific

This thesis statement has no specific argument:

Needs Improvement: In this essay, I will examine two scholarly articles to find similarities and differences.

This statement is concise, but it is neither specific nor arguable—a reader might wonder, "Which scholarly articles? What is the topic of this paper? What field is the author writing in?" Additionally, the purpose of the paper—to "examine…to find similarities and differences" is not of a scholarly level. Identifying similarities and differences is a good first step, but strong academic argument goes further, analyzing what those similarities and differences might mean or imply.

Better: In this essay, I will argue that Bowler's (2003) autocratic management style, when coupled with Smith's (2007) theory of social cognition, can reduce the expenses associated with employee turnover.

The new revision here is still concise, as well as specific and arguable.  We can see that it is specific because the writer is mentioning (a) concrete ideas and (b) exact authors.  We can also gather the field (business) and the topic (management and employee turnover). The statement is arguable because the student goes beyond merely comparing; he or she draws conclusions from that comparison ("can reduce the expenses associated with employee turnover").

Making a Unique Argument

This thesis draft repeats the language of the writing prompt without making a unique argument:

Needs Improvement: The purpose of this essay is to monitor, assess, and evaluate an educational program for its strengths and weaknesses. Then, I will provide suggestions for improvement.

You can see here that the student has simply stated the paper's assignment, without articulating specifically how he or she will address it. The student can correct this error simply by phrasing the thesis statement as a specific answer to the assignment prompt.

Better: Through a series of student interviews, I found that Kennedy High School's antibullying program was ineffective. In order to address issues of conflict between students, I argue that Kennedy High School should embrace policies outlined by the California Department of Education (2010).

Words like "ineffective" and "argue" show here that the student has clearly thought through the assignment and analyzed the material; he or she is putting forth a specific and debatable position. The concrete information ("student interviews," "antibullying") further prepares the reader for the body of the paper and demonstrates how the student has addressed the assignment prompt without just restating that language.

Creating a Debate

This thesis statement includes only obvious fact or plot summary instead of argument:

Needs Improvement: Leadership is an important quality in nurse educators.

A good strategy to determine if your thesis statement is too broad (and therefore, not arguable) is to ask yourself, "Would a scholar in my field disagree with this point?" Here, we can see easily that no scholar is likely to argue that leadership is an unimportant quality in nurse educators.  The student needs to come up with a more arguable claim, and probably a narrower one; remember that a short paper needs a more focused topic than a dissertation.

Better: Roderick's (2009) theory of participatory leadership  is particularly appropriate to nurse educators working within the emergency medicine field, where students benefit most from collegial and kinesthetic learning.

Here, the student has identified a particular type of leadership ("participatory leadership"), narrowing the topic, and has made an arguable claim (this type of leadership is "appropriate" to a specific type of nurse educator). Conceivably, a scholar in the nursing field might disagree with this approach. The student's paper can now proceed, providing specific pieces of evidence to support the arguable central claim.

Choosing the Right Words

This thesis statement uses large or scholarly-sounding words that have no real substance:

Needs Improvement: Scholars should work to seize metacognitive outcomes by harnessing discipline-based networks to empower collaborative infrastructures.

There are many words in this sentence that may be buzzwords in the student's field or key terms taken from other texts, but together they do not communicate a clear, specific meaning. Sometimes students think scholarly writing means constructing complex sentences using special language, but actually it's usually a stronger choice to write clear, simple sentences. When in doubt, remember that your ideas should be complex, not your sentence structure.

Better: Ecologists should work to educate the U.S. public on conservation methods by making use of local and national green organizations to create a widespread communication plan.

Notice in the revision that the field is now clear (ecology), and the language has been made much more field-specific ("conservation methods," "green organizations"), so the reader is able to see concretely the ideas the student is communicating.

Leaving Room for Discussion

This thesis statement is not capable of development or advancement in the paper:

Needs Improvement: There are always alternatives to illegal drug use.

This sample thesis statement makes a claim, but it is not a claim that will sustain extended discussion. This claim is the type of claim that might be appropriate for the conclusion of a paper, but in the beginning of the paper, the student is left with nowhere to go. What further points can be made? If there are "always alternatives" to the problem the student is identifying, then why bother developing a paper around that claim? Ideally, a thesis statement should be complex enough to explore over the length of the entire paper.

Better: The most effective treatment plan for methamphetamine addiction may be a combination of pharmacological and cognitive therapy, as argued by Baker (2008), Smith (2009), and Xavier (2011).

In the revised thesis, you can see the student make a specific, debatable claim that has the potential to generate several pages' worth of discussion. When drafting a thesis statement, think about the questions your thesis statement will generate: What follow-up inquiries might a reader have? In the first example, there are almost no additional questions implied, but the revised example allows for a good deal more exploration.

Thesis Mad Libs

If you are having trouble getting started, try using the models below to generate a rough model of a thesis statement! These models are intended for drafting purposes only and should not appear in your final work.

  • In this essay, I argue ____, using ______ to assert _____.
  • While scholars have often argued ______, I argue______, because_______.
  • Through an analysis of ______, I argue ______, which is important because_______.

Words to Avoid and to Embrace

When drafting your thesis statement, avoid words like explore, investigate, learn, compile, summarize , and explain to describe the main purpose of your paper. These words imply a paper that summarizes or "reports," rather than synthesizing and analyzing.

Instead of the terms above, try words like argue, critique, question , and interrogate . These more analytical words may help you begin strongly, by articulating a specific, critical, scholarly position.

Read Kayla's blog post for tips on taking a stand in a well-crafted thesis statement.

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Think of yourself as a member of a jury, listening to a lawyer who is presenting an opening argument. You'll want to know very soon whether the lawyer believes the accused to be guilty or not guilty, and how the lawyer plans to convince you. Readers of academic essays are like jury members: before they have read too far, they want to know what the essay argues as well as how the writer plans to make the argument. After reading your thesis statement, the reader should think, "This essay is going to try to convince me of something. I'm not convinced yet, but I'm interested to see how I might be."

An effective thesis cannot be answered with a simple "yes" or "no." A thesis is not a topic; nor is it a fact; nor is it an opinion. "Reasons for the fall of communism" is a topic. "Communism collapsed in Eastern Europe" is a fact known by educated people. "The fall of communism is the best thing that ever happened in Europe" is an opinion. (Superlatives like "the best" almost always lead to trouble. It's impossible to weigh every "thing" that ever happened in Europe. And what about the fall of Hitler? Couldn't that be "the best thing"?)

A good thesis has two parts. It should tell what you plan to argue, and it should "telegraph" how you plan to argue—that is, what particular support for your claim is going where in your essay.

Steps in Constructing a Thesis

First, analyze your primary sources.  Look for tension, interest, ambiguity, controversy, and/or complication. Does the author contradict himself or herself? Is a point made and later reversed? What are the deeper implications of the author's argument? Figuring out the why to one or more of these questions, or to related questions, will put you on the path to developing a working thesis. (Without the why, you probably have only come up with an observation—that there are, for instance, many different metaphors in such-and-such a poem—which is not a thesis.)

Once you have a working thesis, write it down.  There is nothing as frustrating as hitting on a great idea for a thesis, then forgetting it when you lose concentration. And by writing down your thesis you will be forced to think of it clearly, logically, and concisely. You probably will not be able to write out a final-draft version of your thesis the first time you try, but you'll get yourself on the right track by writing down what you have.

Keep your thesis prominent in your introduction.  A good, standard place for your thesis statement is at the end of an introductory paragraph, especially in shorter (5-15 page) essays. Readers are used to finding theses there, so they automatically pay more attention when they read the last sentence of your introduction. Although this is not required in all academic essays, it is a good rule of thumb.

Anticipate the counterarguments.  Once you have a working thesis, you should think about what might be said against it. This will help you to refine your thesis, and it will also make you think of the arguments that you'll need to refute later on in your essay. (Every argument has a counterargument. If yours doesn't, then it's not an argument—it may be a fact, or an opinion, but it is not an argument.)

This statement is on its way to being a thesis. However, it is too easy to imagine possible counterarguments. For example, a political observer might believe that Dukakis lost because he suffered from a "soft-on-crime" image. If you complicate your thesis by anticipating the counterargument, you'll strengthen your argument, as shown in the sentence below.

Some Caveats and Some Examples

A thesis is never a question.  Readers of academic essays expect to have questions discussed, explored, or even answered. A question ("Why did communism collapse in Eastern Europe?") is not an argument, and without an argument, a thesis is dead in the water.

A thesis is never a list.  "For political, economic, social and cultural reasons, communism collapsed in Eastern Europe" does a good job of "telegraphing" the reader what to expect in the essay—a section about political reasons, a section about economic reasons, a section about social reasons, and a section about cultural reasons. However, political, economic, social and cultural reasons are pretty much the only possible reasons why communism could collapse. This sentence lacks tension and doesn't advance an argument. Everyone knows that politics, economics, and culture are important.

A thesis should never be vague, combative or confrontational.  An ineffective thesis would be, "Communism collapsed in Eastern Europe because communism is evil." This is hard to argue (evil from whose perspective? what does evil mean?) and it is likely to mark you as moralistic and judgmental rather than rational and thorough. It also may spark a defensive reaction from readers sympathetic to communism. If readers strongly disagree with you right off the bat, they may stop reading.

An effective thesis has a definable, arguable claim.  "While cultural forces contributed to the collapse of communism in Eastern Europe, the disintegration of economies played the key role in driving its decline" is an effective thesis sentence that "telegraphs," so that the reader expects the essay to have a section about cultural forces and another about the disintegration of economies. This thesis makes a definite, arguable claim: that the disintegration of economies played a more important role than cultural forces in defeating communism in Eastern Europe. The reader would react to this statement by thinking, "Perhaps what the author says is true, but I am not convinced. I want to read further to see how the author argues this claim."

A thesis should be as clear and specific as possible.  Avoid overused, general terms and abstractions. For example, "Communism collapsed in Eastern Europe because of the ruling elite's inability to address the economic concerns of the people" is more powerful than "Communism collapsed due to societal discontent."

Copyright 1999, Maxine Rodburg and The Tutors of the Writing Center at Harvard University

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should a thesis statement have evidence

How to Write a Strong Thesis Statement: 4 Steps + Examples

should a thesis statement have evidence

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What is the purpose of a thesis statement, writing a good thesis statement: 4 steps, common pitfalls to avoid, where to get your essay edited for free.

When you set out to write an essay, there has to be some kind of point to it, right? Otherwise, your essay would just be a big jumble of word salad that makes absolutely no sense. An essay needs a central point that ties into everything else. That main point is called a thesis statement, and it’s the core of any essay or research paper.

You may hear about Master degree candidates writing a thesis, and that is an entire paper–not to be confused with the thesis statement, which is typically one sentence that contains your paper’s focus. 

Read on to learn more about thesis statements and how to write them. We’ve also included some solid examples for you to reference.

Typically the last sentence of your introductory paragraph, the thesis statement serves as the roadmap for your essay. When your reader gets to the thesis statement, they should have a clear outline of your main point, as well as the information you’ll be presenting in order to either prove or support your point. 

The thesis statement should not be confused for a topic sentence , which is the first sentence of every paragraph in your essay. If you need help writing topic sentences, numerous resources are available. Topic sentences should go along with your thesis statement, though.

Since the thesis statement is the most important sentence of your entire essay or paper, it’s imperative that you get this part right. Otherwise, your paper will not have a good flow and will seem disjointed. That’s why it’s vital not to rush through developing one. It’s a methodical process with steps that you need to follow in order to create the best thesis statement possible.

Step 1: Decide what kind of paper you’re writing

When you’re assigned an essay, there are several different types you may get. Argumentative essays are designed to get the reader to agree with you on a topic. Informative or expository essays present information to the reader. Analytical essays offer up a point and then expand on it by analyzing relevant information. Thesis statements can look and sound different based on the type of paper you’re writing. For example:

  • Argumentative: The United States needs a viable third political party to decrease bipartisanship, increase options, and help reduce corruption in government.
  • Informative: The Libertarian party has thrown off elections before by gaining enough support in states to get on the ballot and by taking away crucial votes from candidates.
  • Analytical: An analysis of past presidential elections shows that while third party votes may have been the minority, they did affect the outcome of the elections in 2020, 2016, and beyond.

Step 2: Figure out what point you want to make

Once you know what type of paper you’re writing, you then need to figure out the point you want to make with your thesis statement, and subsequently, your paper. In other words, you need to decide to answer a question about something, such as:

  • What impact did reality TV have on American society?
  • How has the musical Hamilton affected perception of American history?
  • Why do I want to major in [chosen major here]?

If you have an argumentative essay, then you will be writing about an opinion. To make it easier, you may want to choose an opinion that you feel passionate about so that you’re writing about something that interests you. For example, if you have an interest in preserving the environment, you may want to choose a topic that relates to that. 

If you’re writing your college essay and they ask why you want to attend that school, you may want to have a main point and back it up with information, something along the lines of:

“Attending Harvard University would benefit me both academically and professionally, as it would give me a strong knowledge base upon which to build my career, develop my network, and hopefully give me an advantage in my chosen field.”

Step 3: Determine what information you’ll use to back up your point

Once you have the point you want to make, you need to figure out how you plan to back it up throughout the rest of your essay. Without this information, it will be hard to either prove or argue the main point of your thesis statement. If you decide to write about the Hamilton example, you may decide to address any falsehoods that the writer put into the musical, such as:

“The musical Hamilton, while accurate in many ways, leaves out key parts of American history, presents a nationalist view of founding fathers, and downplays the racism of the times.”

Once you’ve written your initial working thesis statement, you’ll then need to get information to back that up. For example, the musical completely leaves out Benjamin Franklin, portrays the founding fathers in a nationalist way that is too complimentary, and shows Hamilton as a staunch abolitionist despite the fact that his family likely did own slaves. 

Step 4: Revise and refine your thesis statement before you start writing

Read through your thesis statement several times before you begin to compose your full essay. You need to make sure the statement is ironclad, since it is the foundation of the entire paper. Edit it or have a peer review it for you to make sure everything makes sense and that you feel like you can truly write a paper on the topic. Once you’ve done that, you can then begin writing your paper.

When writing a thesis statement, there are some common pitfalls you should avoid so that your paper can be as solid as possible. Make sure you always edit the thesis statement before you do anything else. You also want to ensure that the thesis statement is clear and concise. Don’t make your reader hunt for your point. Finally, put your thesis statement at the end of the first paragraph and have your introduction flow toward that statement. Your reader will expect to find your statement in its traditional spot.

If you’re having trouble getting started, or need some guidance on your essay, there are tools available that can help you. CollegeVine offers a free peer essay review tool where one of your peers can read through your essay and provide you with valuable feedback. Getting essay feedback from a peer can help you wow your instructor or college admissions officer with an impactful essay that effectively illustrates your point.

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II. Getting Started

2.5 Writing Thesis Statements

Kathryn Crowther; Lauren Curtright; Nancy Gilbert; Barbara Hall; Tracienne Ravita; and Kirk Swenson

To be effective, all support in an essay must work together to convey a central point; otherwise, an essay can fall into the trap of being out of order and confusing. Just as a topic sentence focuses and unifies a single paragraph, the thesis statement focuses and unifies an entire essay. This statement is like a signpost that signals the essay’s destination; it tells the reader the point you want to make in your essay, while the essay itself supports that point.

Because writing is not a linear process, you may find that the best thesis statement develops near the end of your first draft. However, creating a draft or working thesis early in the writing project helps give the drafting process clear direction. You should form your thesis before you begin to organize an essay, but you may find that it needs revision as the essay develops.

A thesis is not just a topic, but rather the writer’s comment or interpretation of the question or subject. For whatever topic you select (for example, school uniforms, social networking), you must ask yourself, “What do I want to say about it?” Asking and then answering this question is vital to forming a thesis that is precise, forceful, and confident.

In the majority of essays, a thesis is one sentence long and appears toward the end of the introductory paragraph. It is specific and focuses on one to three points of a single idea—points that are able to be demonstrated in the body paragraphs. It forecasts the content of the essay and suggests how you will organize your information. Remember that a thesis statement does not summarize an issue but rather dissects it.

Working Thesis Statements

A strong thesis statement must have the following qualities:

  • It must be arguable.  A thesis statement must state a point of view or judgment about a topic. An established fact is not considered arguable.
  • It must be supportable.  The thesis statement must contain a point of view that can be supported with evidence (reasons, facts, examples).
  • It must be specific. A thesis statement must be precise enough to allow for a coherent argument and remain focused on the topic.

Examples of Appropriate Thesis Statements

  • Closing all American borders for a period of five years is one solution that will tackle illegal immigration.
  • Compared to an absolute divorce, no-fault divorce is less expensive, promotes fairer settlements, and reflects a more realistic view of the causes for marital breakdown.
  • Exposing children from an early age to the dangers of drug abuse is a sure method of preventing future drug addicts.
  • In today’s crumbling job market, a high school diploma is not significant enough education to land a stable, lucrative job.
  • The societal and personal struggles of Troy Maxson in the play Fences symbolize the challenges of black males who lived through segregation and integration in the United States.

Pitfalls to Avoid

A thesis is weak when it is simply a declaration of your subject or a description of what you will discuss in your essay.

Weak Thesis Statement Example

My paper will explain why imagination is more important than knowledge.

A thesis is weak when it makes an unreasonable or outrageous claim or insults the opposing side.

Religious radicals across America are trying to legislate their Puritanical beliefs by banning required high school books.

A thesis is weak when it contains an obvious fact or something that no one can disagree with or provides a dead end.

Advertising companies use sex to sell their products.

A thesis is weak when the statement is too broad.

The life of Abraham Lincoln was long and challenging.

Ways to Revise Your Thesis

Your thesis statement begins as a working thesis statement, an indefinite statement that you make about your topic early in the writing process for the purpose of planning and guiding your writing. Working thesis statements often become stronger as you gather information and develop new ideas and reasons for those ideas. Revision helps you strengthen your thesis so that it matches what you have expressed in the body of the paper.

You can cut down on irrelevant aspects and revise your thesis by taking the following steps:

  • Pinpoint and replace all non specific words, such as people, everything, society, or life, with more precise words in order to reduce any vagueness.

Pinpoint and Replace Example

Working thesis:  Young people have to work hard to succeed in life.

Revised thesis:  Recent college graduates must have discipline and persistence in order to find and maintain a stable job in which they can use, and be appreciated for, their talents.

Explanation:  The original includes too broad a range of people and does not define exactly what success entails. By replacing those general words like people and work hard , the writer can better focus their research and gain more direction in their writing. The revised thesis makes a more specific statement about success and what it means to work hard.

  • Clarify ideas that need explanation by asking yourself questions that narrow your thesis.

Clarify Example

Working thesis:  The welfare system is a joke.

Revised thesis:  The welfare system keeps a socioeconomic class from gaining employment by alluring members of that class with unearned income, instead of programs to improve their education and skill sets.

Explanation:  A joke means many things to many people. Readers bring all sorts of backgrounds and perspectives to the reading process and would need clarification for a word so vague. This expression may also be too informal for the selected audience. By asking questions, the writer can devise a more precise and appropriate explanation for joke and more accurately defines their stance, which will better guide the writing of the essay.

  • Replace any linking verbs with action verbs. Linking verbs are forms of the verb to be , a verb that simply states that a situation exists.

Replace with Action Verbs Example

Working thesis:  Kansas City school teachers are not paid enough.

Revised thesis:  The Kansas City legislature cannot afford to pay its educators, resulting in job cuts and resignations in a district that sorely needs highly qualified and dedicated teachers.

Explanation:  The linking verb in this working thesis statement is the word are . Linking verbs often make thesis statements weak because they do not express action. Rather, they connect words and phrases to the second half of the sentence. Readers might wonder, “Why are they not paid enough?” But this statement does not compel them to ask many more questions.

  • Who is not paying the teachers enough?
  • How much is considered “enough”?
  • What is the problem?
  • What are the results?
  • Omit any general claims that are hard to support.

Omit General Claims Example

Working thesis:  Today’s teenage girls are too sexualized.

Revised thesis: Teenage girls who are captivated by the sexual images on the internet and social media are conditioned to believe that a woman’s worth depends on her sensuality, a feeling that harms their self-esteem and behavior.

Explanation:  It is true that some young women in today’s society are more sexualized than in the past, but that is not true for all girls. Many girls have strict parents, dress appropriately, and do not engage in sexual activity while in middle school and high school. The writer of this thesis should ask the following questions:

  • Which teenage girls?
  • What constitutes “too” sexualized?
  • Why are they behaving that way?
  • Where does this behavior show up?
  • What are the repercussions?

This section contains material from:

Crowther, Kathryn, Lauren Curtright, Nancy Gilbert, Barbara Hall, Tracienne Ravita, and Kirk Swenson. Successful College Composition . 2nd ed. Book 8. Georgia: English Open Textbooks, 2016. http://oer.galileo.usg.edu/english-textbooks/8 . Licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License .

Relating to lines; a way of explaining information logically and/or sequentially; can refer to the chronological relaying of information.

A brief and concise statement or series of statements that outlines the main point(s) of a longer work. To summarize is to create a brief and concise statement or series of statements that outlines the main point(s) of a longer work.

To analyze closely or minutely; to scrutinize every aspect. Unlike the fields of biology, anatomy, or medicine, in rhetoric and writing, dissect does not refer to the cutting apart of a physical body but to the taking apart the body of an argument or idea piece by piece to understand it better.

A logical, rational, lucid, or understandable expression of an idea, concept, or notion; consistent and harmonious explanation.

Assertion or announcement of belief, understanding, or knowledge; a formal statement or proclamation.

Without a defined number or limit; unlimited, infinite, or undetermined.

An altered version of  a written work. Revising means to rewrite in order to improve and make corrections. Unlike editing, which involves minor changes, revisions include major and noticeable changes to a written work.

Not relevant; unimportant; beside the point; not relating to the matter at hand.

Attractive, tempting, or seductive; to have an appealing and charismatic quality.

To influence or convince; to produce a certain or specific result through the use of force.

2.5 Writing Thesis Statements Copyright © 2022 by Kathryn Crowther; Lauren Curtright; Nancy Gilbert; Barbara Hall; Tracienne Ravita; and Kirk Swenson is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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9.1 Developing a Strong, Clear Thesis Statement

Learning objectives.

  • Develop a strong, clear thesis statement with the proper elements.
  • Revise your thesis statement.

Have you ever known a person who was not very good at telling stories? You probably had trouble following his train of thought as he jumped around from point to point, either being too brief in places that needed further explanation or providing too many details on a meaningless element. Maybe he told the end of the story first, then moved to the beginning and later added details to the middle. His ideas were probably scattered, and the story did not flow very well. When the story was over, you probably had many questions.

Just as a personal anecdote can be a disorganized mess, an essay can fall into the same trap of being out of order and confusing. That is why writers need a thesis statement to provide a specific focus for their essay and to organize what they are about to discuss in the body.

Just like a topic sentence summarizes a single paragraph, the thesis statement summarizes an entire essay. It tells the reader the point you want to make in your essay, while the essay itself supports that point. It is like a signpost that signals the essay’s destination. You should form your thesis before you begin to organize an essay, but you may find that it needs revision as the essay develops.

Elements of a Thesis Statement

For every essay you write, you must focus on a central idea. This idea stems from a topic you have chosen or been assigned or from a question your teacher has asked. It is not enough merely to discuss a general topic or simply answer a question with a yes or no. You have to form a specific opinion, and then articulate that into a controlling idea —the main idea upon which you build your thesis.

Remember that a thesis is not the topic itself, but rather your interpretation of the question or subject. For whatever topic your professor gives you, you must ask yourself, “What do I want to say about it?” Asking and then answering this question is vital to forming a thesis that is precise, forceful and confident.

A thesis is one sentence long and appears toward the end of your introduction. It is specific and focuses on one to three points of a single idea—points that are able to be demonstrated in the body. It forecasts the content of the essay and suggests how you will organize your information. Remember that a thesis statement does not summarize an issue but rather dissects it.

A Strong Thesis Statement

A strong thesis statement contains the following qualities.

Specificity. A thesis statement must concentrate on a specific area of a general topic. As you may recall, the creation of a thesis statement begins when you choose a broad subject and then narrow down its parts until you pinpoint a specific aspect of that topic. For example, health care is a broad topic, but a proper thesis statement would focus on a specific area of that topic, such as options for individuals without health care coverage.

Precision. A strong thesis statement must be precise enough to allow for a coherent argument and to remain focused on the topic. If the specific topic is options for individuals without health care coverage, then your precise thesis statement must make an exact claim about it, such as that limited options exist for those who are uninsured by their employers. You must further pinpoint what you are going to discuss regarding these limited effects, such as whom they affect and what the cause is.

Ability to be argued. A thesis statement must present a relevant and specific argument. A factual statement often is not considered arguable. Be sure your thesis statement contains a point of view that can be supported with evidence.

Ability to be demonstrated. For any claim you make in your thesis, you must be able to provide reasons and examples for your opinion. You can rely on personal observations in order to do this, or you can consult outside sources to demonstrate that what you assert is valid. A worthy argument is backed by examples and details.

Forcefulness. A thesis statement that is forceful shows readers that you are, in fact, making an argument. The tone is assertive and takes a stance that others might oppose.

Confidence. In addition to using force in your thesis statement, you must also use confidence in your claim. Phrases such as I feel or I believe actually weaken the readers’ sense of your confidence because these phrases imply that you are the only person who feels the way you do. In other words, your stance has insufficient backing. Taking an authoritative stance on the matter persuades your readers to have faith in your argument and open their minds to what you have to say.

Even in a personal essay that allows the use of first person, your thesis should not contain phrases such as in my opinion or I believe . These statements reduce your credibility and weaken your argument. Your opinion is more convincing when you use a firm attitude.

On a separate sheet of paper, write a thesis statement for each of the following topics. Remember to make each statement specific, precise, demonstrable, forceful and confident.

  • Texting while driving
  • The legal drinking age in the United States
  • Steroid use among professional athletes

Examples of Appropriate Thesis Statements

Each of the following thesis statements meets several of the following requirements:

  • Specificity
  • Ability to be argued
  • Ability to be demonstrated
  • Forcefulness
  • The societal and personal struggles of Troy Maxon in the play Fences symbolize the challenge of black males who lived through segregation and integration in the United States.
  • Closing all American borders for a period of five years is one solution that will tackle illegal immigration.
  • Shakespeare’s use of dramatic irony in Romeo and Juliet spoils the outcome for the audience and weakens the plot.
  • J. D. Salinger’s character in Catcher in the Rye , Holden Caulfield, is a confused rebel who voices his disgust with phonies, yet in an effort to protect himself, he acts like a phony on many occasions.
  • Compared to an absolute divorce, no-fault divorce is less expensive, promotes fairer settlements, and reflects a more realistic view of the causes for marital breakdown.
  • Exposing children from an early age to the dangers of drug abuse is a sure method of preventing future drug addicts.
  • In today’s crumbling job market, a high school diploma is not significant enough education to land a stable, lucrative job.

You can find thesis statements in many places, such as in the news; in the opinions of friends, coworkers or teachers; and even in songs you hear on the radio. Become aware of thesis statements in everyday life by paying attention to people’s opinions and their reasons for those opinions. Pay attention to your own everyday thesis statements as well, as these can become material for future essays.

Now that you have read about the contents of a good thesis statement and have seen examples, take a look at the pitfalls to avoid when composing your own thesis:

A thesis is weak when it is simply a declaration of your subject or a description of what you will discuss in your essay.

Weak thesis statement: My paper will explain why imagination is more important than knowledge.

A thesis is weak when it makes an unreasonable or outrageous claim or insults the opposing side.

Weak thesis statement: Religious radicals across America are trying to legislate their Puritanical beliefs by banning required high school books.

A thesis is weak when it contains an obvious fact or something that no one can disagree with or provides a dead end.

Weak thesis statement: Advertising companies use sex to sell their products.

A thesis is weak when the statement is too broad.

Weak thesis statement: The life of Abraham Lincoln was long and challenging.

Read the following thesis statements. On a separate piece of paper, identify each as weak or strong. For those that are weak, list the reasons why. Then revise the weak statements so that they conform to the requirements of a strong thesis.

  • The subject of this paper is my experience with ferrets as pets.
  • The government must expand its funding for research on renewable energy resources in order to prepare for the impending end of oil.
  • Edgar Allan Poe was a poet who lived in Baltimore during the nineteenth century.
  • In this essay, I will give you lots of reasons why slot machines should not be legalized in Baltimore.
  • Despite his promises during his campaign, President Kennedy took few executive measures to support civil rights legislation.
  • Because many children’s toys have potential safety hazards that could lead to injury, it is clear that not all children’s toys are safe.
  • My experience with young children has taught me that I want to be a disciplinary parent because I believe that a child without discipline can be a parent’s worst nightmare.

Writing at Work

Often in your career, you will need to ask your boss for something through an e-mail. Just as a thesis statement organizes an essay, it can also organize your e-mail request. While your e-mail will be shorter than an essay, using a thesis statement in your first paragraph quickly lets your boss know what you are asking for, why it is necessary, and what the benefits are. In short body paragraphs, you can provide the essential information needed to expand upon your request.

Thesis Statement Revision

Your thesis will probably change as you write, so you will need to modify it to reflect exactly what you have discussed in your essay. Remember from Chapter 8 “The Writing Process: How Do I Begin?” that your thesis statement begins as a working thesis statement , an indefinite statement that you make about your topic early in the writing process for the purpose of planning and guiding your writing.

Working thesis statements often become stronger as you gather information and form new opinions and reasons for those opinions. Revision helps you strengthen your thesis so that it matches what you have expressed in the body of the paper.

The best way to revise your thesis statement is to ask questions about it and then examine the answers to those questions. By challenging your own ideas and forming definite reasons for those ideas, you grow closer to a more precise point of view, which you can then incorporate into your thesis statement.

Ways to Revise Your Thesis

You can cut down on irrelevant aspects and revise your thesis by taking the following steps:

1. Pinpoint and replace all nonspecific words, such as people , everything , society , or life , with more precise words in order to reduce any vagueness.

Working thesis: Young people have to work hard to succeed in life.

Revised thesis: Recent college graduates must have discipline and persistence in order to find and maintain a stable job in which they can use and be appreciated for their talents.

The revised thesis makes a more specific statement about success and what it means to work hard. The original includes too broad a range of people and does not define exactly what success entails. By replacing those general words like people and work hard , the writer can better focus his or her research and gain more direction in his or her writing.

2. Clarify ideas that need explanation by asking yourself questions that narrow your thesis.

Working thesis: The welfare system is a joke.

Revised thesis: The welfare system keeps a socioeconomic class from gaining employment by alluring members of that class with unearned income, instead of programs to improve their education and skill sets.

A joke means many things to many people. Readers bring all sorts of backgrounds and perspectives to the reading process and would need clarification for a word so vague. This expression may also be too informal for the selected audience. By asking questions, the writer can devise a more precise and appropriate explanation for joke . The writer should ask himself or herself questions similar to the 5WH questions. (See Chapter 8 “The Writing Process: How Do I Begin?” for more information on the 5WH questions.) By incorporating the answers to these questions into a thesis statement, the writer more accurately defines his or her stance, which will better guide the writing of the essay.

3. Replace any linking verbs with action verbs. Linking verbs are forms of the verb to be , a verb that simply states that a situation exists.

Working thesis: Kansas City schoolteachers are not paid enough.

Revised thesis: The Kansas City legislature cannot afford to pay its educators, resulting in job cuts and resignations in a district that sorely needs highly qualified and dedicated teachers.

The linking verb in this working thesis statement is the word are . Linking verbs often make thesis statements weak because they do not express action. Rather, they connect words and phrases to the second half of the sentence. Readers might wonder, “Why are they not paid enough?” But this statement does not compel them to ask many more questions. The writer should ask himself or herself questions in order to replace the linking verb with an action verb, thus forming a stronger thesis statement, one that takes a more definitive stance on the issue:

  • Who is not paying the teachers enough?
  • What is considered “enough”?
  • What is the problem?
  • What are the results

4. Omit any general claims that are hard to support.

Working thesis: Today’s teenage girls are too sexualized.

Revised thesis: Teenage girls who are captivated by the sexual images on MTV are conditioned to believe that a woman’s worth depends on her sensuality, a feeling that harms their self-esteem and behavior.

It is true that some young women in today’s society are more sexualized than in the past, but that is not true for all girls. Many girls have strict parents, dress appropriately, and do not engage in sexual activity while in middle school and high school. The writer of this thesis should ask the following questions:

  • Which teenage girls?
  • What constitutes “too” sexualized?
  • Why are they behaving that way?
  • Where does this behavior show up?
  • What are the repercussions?

In the first section of Chapter 8 “The Writing Process: How Do I Begin?” , you determined your purpose for writing and your audience. You then completed a freewriting exercise about an event you recently experienced and chose a general topic to write about. Using that general topic, you then narrowed it down by answering the 5WH questions. After you answered these questions, you chose one of the three methods of prewriting and gathered possible supporting points for your working thesis statement.

Now, on a separate sheet of paper, write down your working thesis statement. Identify any weaknesses in this sentence and revise the statement to reflect the elements of a strong thesis statement. Make sure it is specific, precise, arguable, demonstrable, forceful, and confident.

Collaboration

Please share with a classmate and compare your answers.

In your career you may have to write a project proposal that focuses on a particular problem in your company, such as reinforcing the tardiness policy. The proposal would aim to fix the problem; using a thesis statement would clearly state the boundaries of the problem and tell the goals of the project. After writing the proposal, you may find that the thesis needs revision to reflect exactly what is expressed in the body. Using the techniques from this chapter would apply to revising that thesis.

Key Takeaways

  • Proper essays require a thesis statement to provide a specific focus and suggest how the essay will be organized.
  • A thesis statement is your interpretation of the subject, not the topic itself.
  • A strong thesis is specific, precise, forceful, confident, and is able to be demonstrated.
  • A strong thesis challenges readers with a point of view that can be debated and can be supported with evidence.
  • A weak thesis is simply a declaration of your topic or contains an obvious fact that cannot be argued.
  • Depending on your topic, it may or may not be appropriate to use first person point of view.
  • Revise your thesis by ensuring all words are specific, all ideas are exact, and all verbs express action.

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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Identifying Thesis Statements, Claims, and Evidence

Thesis statements, claims, and evidence, introduction.

The three important parts of an argumentative essay are:

  • A thesis statement is a sentence, usually in the first paragraph of an article, that expresses the article’s main point. It is not a fact; it’s a statement that you could disagree with.  Therefore, the author has to convince you that the statement is correct.
  • Claims are statements that support the thesis statement, but like the thesis statement,  are not facts.  Because a claim is not a fact, it requires supporting evidence.
  • Evidence is factual information that shows a claim is true.  Usually, writers have to conduct their own research to find evidence that supports their ideas.  The evidence may include statistical (numerical) information, the opinions of experts, studies, personal experience, scholarly articles, or reports.

Each paragraph in the article is numbered at the beginning of the first sentence.

Paragraphs 1-7

Identifying the Thesis Statement. Paragraph 2 ends with this thesis statement:  “People’s prior convictions should not be held against them in their pursuit of higher learning.”  It is a thesis statement for three reasons:

  • It is the article’s main argument.
  • It is not a fact. Someone could think that peoples’ prior convictions should affect their access to higher education.
  • It requires evidence to show that it is true.

Finding Claims.  A claim is statement that supports a thesis statement.  Like a thesis, it is not a fact so it needs to be supported by evidence.

You have already identified the article’s thesis statement: “People’s prior convictions should not be held against them in their pursuit of higher learning.”

Like the thesis, a claim be an idea that the author believes to be true, but others may not agree.  For this reason, a claim needs support.

  • Question 1.  Can you find a claim in paragraph 3? Look for a statement that might be true, but needs to be supported by evidence.

Finding Evidence. 

Paragraphs 5-7 offer one type of evidence to support the claim you identified in the last question.  Reread paragraphs 5-7.

  • Question 2.  Which word best describes the kind of evidence included in those paragraphs:  A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 8-10

Finding Claims

Paragraph 8 makes two claims:

  • “The United States needs to have more of this transformative power of education.”
  • “The country [the United States] incarcerates more people and at a higher rate than any other nation in the world.”

Finding Evidence

Paragraphs 8 and 9 include these statistics as evidence:

  • “The U.S. accounts for less than 5 percent of the world population but nearly 25 percent of the incarcerated population around the globe.”
  • “Roughly 2.2 million people in the United States are essentially locked away in cages. About 1 in 5 of those people are locked up for drug offenses.”

Question 3. Does this evidence support claim 1 from paragraph 8 (about the transformative power of education) or claim 2 (about the U.S.’s high incarceration rate)?

Question 4. Which word best describes this kind of evidence:  A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 11-13

Remember that in paragraph 2, Andrisse writes that:

  • “People’s prior convictions should not be held against them in their pursuit of higher learning.” (Thesis statement)
  • “More must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.” (Claim)

Now, review paragraphs 11-13 (Early life of crime). In these paragraphs, Andrisse shares more of his personal story.

Question 5. Do you think his personal story is evidence for statement 1 above, statement 2, both, or neither one?

Question 6. Is yes, which one(s)?

Question 7. Do you think his personal story is good evidence?  Does it persuade you to agree with him?

Paragraphs 14-16

Listed below are some claims that Andrisse makes in paragraph 14.  Below each claim, please write the supporting evidence from paragraphs 15 and 16.  If you can’t find any evidence,  write “none.”

Claim:  The more education a person has, the higher their income.

Claim: Similarly, the more education a person has, the less likely they are to return to prison.

Paragraphs 17-19

Evaluating Evidence

In these paragraphs, Andrisse returns to his personal story. He explains how his father’s illness inspired him to become a doctor and shares that he was accepted to only one of six biomedical graduate programs.

Do you think that this part of Andrisse’s story serves as evidence (support) for any claims that you’ve identified so far?   Or does it support his general thesis that “people’s prior convictions should not be held against them in pursuit of higher learning?” Please explain your answer.

Paragraphs 20-23

Andrisse uses his personal experience to repeat a claim he makes in paragraph 3, that “more must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.”

To support this statement, he has to show that barriers exist.  One barrier he identifies is the cost of college. He then explains the advantages of offering Pell grants to incarcerated people.

What evidence in paragraphs 21-23 support his claim about the success of Pell grants?

Paragraphs  24-28 (Remove questions about drug crimes from federal aid forms)

In this section, Andrisse argues that federal aid forms should not ask students about prior drug convictions.  To support that claim, he includes a statistic about students who had to answer a similar question on their college application.

What statistic does he include?

In paragraph 25, he assumes that if a question about drug convictions discourages students from applying to college, it will probably also discourage them from applying for federal aid.

What do you think about this assumption?   Do you think it’s reasonable or do you think Andrisse needs stronger evidence to show that federal aid forms should not ask students about prior drug convictions?

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The thesis statement or main claim must be debatable

An argumentative or persuasive piece of writing must begin with a debatable thesis or claim. In other words, the thesis must be something that people could reasonably have differing opinions on. If your thesis is something that is generally agreed upon or accepted as fact then there is no reason to try to persuade people.

Example of a non-debatable thesis statement:

This thesis statement is not debatable. First, the word pollution implies that something is bad or negative in some way. Furthermore, all studies agree that pollution is a problem; they simply disagree on the impact it will have or the scope of the problem. No one could reasonably argue that pollution is unambiguously good.

Example of a debatable thesis statement:

This is an example of a debatable thesis because reasonable people could disagree with it. Some people might think that this is how we should spend the nation's money. Others might feel that we should be spending more money on education. Still others could argue that corporations, not the government, should be paying to limit pollution.

Another example of a debatable thesis statement:

In this example there is also room for disagreement between rational individuals. Some citizens might think focusing on recycling programs rather than private automobiles is the most effective strategy.

The thesis needs to be narrow

Although the scope of your paper might seem overwhelming at the start, generally the narrower the thesis the more effective your argument will be. Your thesis or claim must be supported by evidence. The broader your claim is, the more evidence you will need to convince readers that your position is right.

Example of a thesis that is too broad:

There are several reasons this statement is too broad to argue. First, what is included in the category "drugs"? Is the author talking about illegal drug use, recreational drug use (which might include alcohol and cigarettes), or all uses of medication in general? Second, in what ways are drugs detrimental? Is drug use causing deaths (and is the author equating deaths from overdoses and deaths from drug related violence)? Is drug use changing the moral climate or causing the economy to decline? Finally, what does the author mean by "society"? Is the author referring only to America or to the global population? Does the author make any distinction between the effects on children and adults? There are just too many questions that the claim leaves open. The author could not cover all of the topics listed above, yet the generality of the claim leaves all of these possibilities open to debate.

Example of a narrow or focused thesis:

In this example the topic of drugs has been narrowed down to illegal drugs and the detriment has been narrowed down to gang violence. This is a much more manageable topic.

We could narrow each debatable thesis from the previous examples in the following way:

Narrowed debatable thesis 1:

This thesis narrows the scope of the argument by specifying not just the amount of money used but also how the money could actually help to control pollution.

Narrowed debatable thesis 2:

This thesis narrows the scope of the argument by specifying not just what the focus of a national anti-pollution campaign should be but also why this is the appropriate focus.

Qualifiers such as " typically ," " generally ," " usually ," or " on average " also help to limit the scope of your claim by allowing for the almost inevitable exception to the rule.

Types of claims

Claims typically fall into one of four categories. Thinking about how you want to approach your topic, or, in other words, what type of claim you want to make, is one way to focus your thesis on one particular aspect of your broader topic.

Claims of fact or definition: These claims argue about what the definition of something is or whether something is a settled fact. Example:

Claims of cause and effect: These claims argue that one person, thing, or event caused another thing or event to occur. Example:

Claims about value: These are claims made of what something is worth, whether we value it or not, how we would rate or categorize something. Example:

Claims about solutions or policies: These are claims that argue for or against a certain solution or policy approach to a problem. Example:

Which type of claim is right for your argument? Which type of thesis or claim you use for your argument will depend on your position and knowledge of the topic, your audience, and the context of your paper. You might want to think about where you imagine your audience to be on this topic and pinpoint where you think the biggest difference in viewpoints might be. Even if you start with one type of claim you probably will be using several within the paper. Regardless of the type of claim you choose to utilize it is key to identify the controversy or debate you are addressing and to define your position early on in the paper.

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7: Identifying Thesis Statements, Claims, and Evidence

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Learning Objectives

This chapter teaches you how to identify the elements of argumentative writing: a thesis statement, claims, and evidence.

Thesis Statements, Claims, and Evidence

Introduction.

The three important parts of an argumentative essay are:

  • A thesis statement is a sentence, usually in the first paragraph of an article, that expresses the article’s main point. It is not a fact; it’s a statement that you could disagree with. Therefore, the author has to convince you that the statement is correct.
  • Claims are statements that support the thesis statement, but like the thesis statement, are not facts. Because a claim is not a fact, it requires supporting evidence.
  • Evidence is factual information that shows a claim is true. Usually, writers have to conduct their own research to find evidence that supports their ideas. The evidence may include statistical (numerical) information, the opinions of experts, studies, personal experience, scholarly articles, or reports.

Each paragraph in the article is numbered at the beginning of the first sentence.

Paragraphs 1-7

Identifying the Thesis Statement. Paragraph 2 ends with this thesis statement: “People’s prior convictions should not be held against them in their pursuit of higher learning.” It is a thesis statement for three reasons:

  • It is the article’s main argument.
  • It is not a fact. Someone could think that peoples’ prior convictions should affect their access to higher education.
  • It requires evidence to show that it is true.

Finding Claims. A claim is statement that supports a thesis statement. Like a thesis, it is not a fact so it needs to be supported by evidence.

You have already identified the article’s thesis statement: “People’s prior convictions should not be held against them in their pursuit of higher learning.”

Like the thesis, a claim be an idea that the author believes to be true, but others may not agree. For this reason, a claim needs support.

  • Question 1. Can you find a claim in paragraph 3? Look for a statement that might be true, but needs to be supported by evidence.

Finding Evidence.

Paragraphs 5-7 offer one type of evidence to support the claim you identified in the last question. Reread paragraphs 5-7.

  • Question 2. Which word best describes the kind of evidence included in those paragraphs: A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 8-10

Finding Claims

Paragraph 8 makes two claims:

  • “The United States needs to have more of this transformative power of education.”
  • “The country [the United States] incarcerates more people and at a higher rate than any other nation in the world.”

Finding Evidence

Paragraphs 8 and 9 include these statistics as evidence:

  • “The U.S. accounts for less than 5 percent of the world population but nearly 25 percent of the incarcerated population around the globe.”
  • “Roughly 2.2 million people in the United States are essentially locked away in cages. About 1 in 5 of those people are locked up for drug offenses.”

Question 3. Does this evidence support claim 1 from paragraph 8 (about the transformative power of education) or claim 2 (about the U.S.’s high incarceration rate)?

Question 4. Which word best describes this kind of evidence: A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 11-13

Remember that in paragraph 2, Andrisse writes that:

  • “People’s prior convictions should not be held against them in their pursuit of higher learning.” (Thesis statement)
  • “More must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.” (Claim)

Now, review paragraphs 11-13 (Early life of crime). In these paragraphs, Andrisse shares more of his personal story.

Question 5. Do you think his personal story is evidence for statement 1 above, statement 2, both, or neither one?

Question 6. Is yes, which one(s)?

Question 7. Do you think his personal story is good evidence? Does it persuade you to agree with him?

Paragraphs 14-16

Listed below are some claims that Andrisse makes in paragraph 14. Below each claim, please write the supporting evidence from paragraphs 15 and 16. If you can’t find any evidence, write “none.”

Claim: The more education a person has, the higher their income.

Claim: Similarly, the more education a person has, the less likely they are to return to prison.

Paragraphs 17-19

Evaluating Evidence

In these paragraphs, Andrisse returns to his personal story. He explains how his father’s illness inspired him to become a doctor and shares that he was accepted to only one of six biomedical graduate programs.

Do you think that this part of Andrisse’s story serves as evidence (support) for any claims that you’ve identified so far? Or does it support his general thesis that “people’s prior convictions should not be held against them in pursuit of higher learning?” Please explain your answer.

Paragraphs 20-23

Andrisse uses his personal experience to repeat a claim he makes in paragraph 3, that “more must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.”

To support this statement, he has to show that barriers exist. One barrier he identifies is the cost of college. He then explains the advantages of offering Pell grants to incarcerated people.

What evidence in paragraphs 21-23 support his claim about the success of Pell grants?

Paragraphs 24-28 (Remove questions about drug crimes from federal aid forms)

In this section, Andrisse argues that federal aid forms should not ask students about prior drug convictions. To support that claim, he includes a statistic about students who had to answer a similar question on their college application.

What statistic does he include?

In paragraph 25, he assumes that if a question about drug convictions discourages students from applying to college, it will probably also discourage them from applying for federal aid.

What do you think about this assumption? Do you think it’s reasonable or do you think Andrisse needs stronger evidence to show that federal aid forms should not ask students about prior drug convictions?

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Using evidence.

Like a lawyer in a jury trial, a writer must convince her audience of the validity of her argument by using evidence effectively. As a writer, you must also use evidence to persuade your readers to accept your claims. But how do you use evidence to your advantage? By leading your reader through your reasoning.

The types of evidence you use change from discipline to discipline--you might use quotations from a poem or a literary critic, for example, in a literature paper; you might use data from an experiment in a lab report.

The process of putting together your argument is called analysis --it interprets evidence in order to support, test, and/or refine a claim . The chief claim in an analytical essay is called the thesis . A thesis provides the controlling idea for a paper and should be original (that is, not completely obvious), assertive, and arguable. A strong thesis also requires solid evidence to support and develop it because without evidence, a claim is merely an unsubstantiated idea or opinion.

This Web page will cover these basic issues (you can click or scroll down to a particular topic):

  • Incorporating evidence effectively.
  • Integrating quotations smoothly.
  • Citing your sources.

Incorporating Evidence Into Your Essay

When should you incorporate evidence.

Once you have formulated your claim, your thesis (see the WTS pamphlet, " How to Write a Thesis Statement ," for ideas and tips), you should use evidence to help strengthen your thesis and any assertion you make that relates to your thesis. Here are some ways to work evidence into your writing:

  • Offer evidence that agrees with your stance up to a point, then add to it with ideas of your own.
  • Present evidence that contradicts your stance, and then argue against (refute) that evidence and therefore strengthen your position.
  • Use sources against each other, as if they were experts on a panel discussing your proposition.
  • Use quotations to support your assertion, not merely to state or restate your claim.

Weak and Strong Uses of Evidence

In order to use evidence effectively, you need to integrate it smoothly into your essay by following this pattern:

  • State your claim.
  • Give your evidence, remembering to relate it to the claim.
  • Comment on the evidence to show how it supports the claim.

To see the differences between strong and weak uses of evidence, here are two paragraphs.

Weak use of evidence
Today, we are too self-centered. Most families no longer sit down to eat together, preferring instead to eat on the go while rushing to the next appointment (Gleick 148). Everything is about what we want.

This is a weak example of evidence because the evidence is not related to the claim. What does the claim about self-centeredness have to do with families eating together? The writer doesn't explain the connection.

The same evidence can be used to support the same claim, but only with the addition of a clear connection between claim and evidence, and some analysis of the evidence cited.

Stronger use of evidence
Today, Americans are too self-centered. Even our families don't matter as much anymore as they once did. Other people and activities take precedence. In fact, the evidence shows that most American families no longer eat together, preferring instead to eat on the go while rushing to the next appointment (Gleick 148). Sit-down meals are a time to share and connect with others; however, that connection has become less valued, as families begin to prize individual activities over shared time, promoting self-centeredness over group identity.

This is a far better example, as the evidence is more smoothly integrated into the text, the link between the claim and the evidence is strengthened, and the evidence itself is analyzed to provide support for the claim.

Using Quotations: A Special Type of Evidence

One effective way to support your claim is to use quotations. However, because quotations involve someone else's words, you need to take special care to integrate this kind of evidence into your essay. Here are two examples using quotations, one less effective and one more so.

Ineffective Use of Quotation
Today, we are too self-centered. "We are consumers-on-the-run . . . the very notion of the family meal as a sit-down occasion is vanishing. Adults and children alike eat . . . on the way to their next activity" (Gleick 148). Everything is about what we want.

This example is ineffective because the quotation is not integrated with the writer's ideas. Notice how the writer has dropped the quotation into the paragraph without making any connection between it and the claim. Furthermore, she has not discussed the quotation's significance, which makes it difficult for the reader to see the relationship between the evidence and the writer's point.

A More Effective Use of Quotation
Today, Americans are too self-centered. Even our families don't matter as much any more as they once did. Other people and activities take precedence, as James Gleick says in his book, Faster . "We are consumers-on-the-run . . . the very notion of the family meal as a sit-down occasion is vanishing. Adults and children alike eat . . . on the way to their next activity" (148). Sit-down meals are a time to share and connect with others; however, that connection has become less valued, as families begin to prize individual activities over shared time, promoting self-centeredness over group identity.

The second example is more effective because it follows the guidelines for incorporating evidence into an essay. Notice, too, that it uses a lead-in phrase (". . . as James Gleick says in his book, Faster ") to introduce the direct quotation. This lead-in phrase helps to integrate the quotation with the writer's ideas. Also notice that the writer discusses and comments upon the quotation immediately afterwards, which allows the reader to see the quotation's connection to the writer's point.

REMEMBER: Discussing the significance of your evidence develops and expands your paper!

Citing Your Sources

Evidence appears in essays in the form of quotations and paraphrasing. Both forms of evidence must be cited in your text. Citing evidence means distinguishing other writers' information from your own ideas and giving credit to your sources. There are plenty of general ways to do citations. Note both the lead-in phrases and the punctuation (except the brackets) in the following examples:

Quoting: According to Source X, "[direct quotation]" ([date or page #]).
Paraphrasing: Although Source Z argues that [his/her point in your own words], a better way to view the issue is [your own point] ([citation]).
Summarizing: In her book, Source P's main points are Q, R, and S [citation].

Your job during the course of your essay is to persuade your readers that your claims are feasible and are the most effective way of interpreting the evidence.

Questions to Ask Yourself When Revising Your Paper

  • Have I offered my reader evidence to substantiate each assertion I make in my paper?
  • Do I thoroughly explain why/how my evidence backs up my ideas?
  • Do I avoid generalizing in my paper by specifically explaining how my evidence is representative?
  • Do I provide evidence that not only confirms but also qualifies my paper's main claims?
  • Do I use evidence to test and evolve my ideas, rather than to just confirm them?
  • Do I cite my sources thoroughly and correctly?

Produced by Writing Tutorial Services, Indiana University, Bloomington, IN

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The Writing Center • University of North Carolina at Chapel Hill

What this handout is about

This handout will provide a broad overview of gathering and using evidence. It will help you decide what counts as evidence, put evidence to work in your writing, and determine whether you have enough evidence. It will also offer links to additional resources.

Introduction

Many papers that you write in college will require you to make an argument ; this means that you must take a position on the subject you are discussing and support that position with evidence. It’s important that you use the right kind of evidence, that you use it effectively, and that you have an appropriate amount of it. If, for example, your philosophy professor didn’t like it that you used a survey of public opinion as your primary evidence in your ethics paper, you need to find out more about what philosophers count as good evidence. If your instructor has told you that you need more analysis, suggested that you’re “just listing” points or giving a “laundry list,” or asked you how certain points are related to your argument, it may mean that you can do more to fully incorporate your evidence into your argument. Comments like “for example?,” “proof?,” “go deeper,” or “expand” in the margins of your graded paper suggest that you may need more evidence. Let’s take a look at each of these issues—understanding what counts as evidence, using evidence in your argument, and deciding whether you need more evidence.

What counts as evidence?

Before you begin gathering information for possible use as evidence in your argument, you need to be sure that you understand the purpose of your assignment. If you are working on a project for a class, look carefully at the assignment prompt. It may give you clues about what sorts of evidence you will need. Does the instructor mention any particular books you should use in writing your paper or the names of any authors who have written about your topic? How long should your paper be (longer works may require more, or more varied, evidence)? What themes or topics come up in the text of the prompt? Our handout on understanding writing assignments can help you interpret your assignment. It’s also a good idea to think over what has been said about the assignment in class and to talk with your instructor if you need clarification or guidance.

What matters to instructors?

Instructors in different academic fields expect different kinds of arguments and evidence—your chemistry paper might include graphs, charts, statistics, and other quantitative data as evidence, whereas your English paper might include passages from a novel, examples of recurring symbols, or discussions of characterization in the novel. Consider what kinds of sources and evidence you have seen in course readings and lectures. You may wish to see whether the Writing Center has a handout regarding the specific academic field you’re working in—for example, literature , sociology , or history .

What are primary and secondary sources?

A note on terminology: many researchers distinguish between primary and secondary sources of evidence (in this case, “primary” means “first” or “original,” not “most important”). Primary sources include original documents, photographs, interviews, and so forth. Secondary sources present information that has already been processed or interpreted by someone else. For example, if you are writing a paper about the movie “The Matrix,” the movie itself, an interview with the director, and production photos could serve as primary sources of evidence. A movie review from a magazine or a collection of essays about the film would be secondary sources. Depending on the context, the same item could be either a primary or a secondary source: if I am writing about people’s relationships with animals, a collection of stories about animals might be a secondary source; if I am writing about how editors gather diverse stories into collections, the same book might now function as a primary source.

Where can I find evidence?

Here are some examples of sources of information and tips about how to use them in gathering evidence. Ask your instructor if you aren’t sure whether a certain source would be appropriate for your paper.

Print and electronic sources

Books, journals, websites, newspapers, magazines, and documentary films are some of the most common sources of evidence for academic writing. Our handout on evaluating print sources will help you choose your print sources wisely, and the library has a tutorial on evaluating both print sources and websites. A librarian can help you find sources that are appropriate for the type of assignment you are completing. Just visit the reference desk at Davis or the Undergraduate Library or chat with a librarian online (the library’s IM screen name is undergradref).

Observation

Sometimes you can directly observe the thing you are interested in, by watching, listening to, touching, tasting, or smelling it. For example, if you were asked to write about Mozart’s music, you could listen to it; if your topic was how businesses attract traffic, you might go and look at window displays at the mall.

An interview is a good way to collect information that you can’t find through any other type of research. An interview can provide an expert’s opinion, biographical or first-hand experiences, and suggestions for further research.

Surveys allow you to find out some of what a group of people thinks about a topic. Designing an effective survey and interpreting the data you get can be challenging, so it’s a good idea to check with your instructor before creating or administering a survey.

Experiments

Experimental data serve as the primary form of scientific evidence. For scientific experiments, you should follow the specific guidelines of the discipline you are studying. For writing in other fields, more informal experiments might be acceptable as evidence. For example, if you want to prove that food choices in a cafeteria are affected by gender norms, you might ask classmates to undermine those norms on purpose and observe how others react. What would happen if a football player were eating dinner with his teammates and he brought a small salad and diet drink to the table, all the while murmuring about his waistline and wondering how many fat grams the salad dressing contained?

Personal experience

Using your own experiences can be a powerful way to appeal to your readers. You should, however, use personal experience only when it is appropriate to your topic, your writing goals, and your audience. Personal experience should not be your only form of evidence in most papers, and some disciplines frown on using personal experience at all. For example, a story about the microscope you received as a Christmas gift when you were nine years old is probably not applicable to your biology lab report.

Using evidence in an argument

Does evidence speak for itself.

Absolutely not. After you introduce evidence into your writing, you must say why and how this evidence supports your argument. In other words, you have to explain the significance of the evidence and its function in your paper. What turns a fact or piece of information into evidence is the connection it has with a larger claim or argument: evidence is always evidence for or against something, and you have to make that link clear.

As writers, we sometimes assume that our readers already know what we are talking about; we may be wary of elaborating too much because we think the point is obvious. But readers can’t read our minds: although they may be familiar with many of the ideas we are discussing, they don’t know what we are trying to do with those ideas unless we indicate it through explanations, organization, transitions, and so forth. Try to spell out the connections that you were making in your mind when you chose your evidence, decided where to place it in your paper, and drew conclusions based on it. Remember, you can always cut prose from your paper later if you decide that you are stating the obvious.

Here are some questions you can ask yourself about a particular bit of evidence:

  • OK, I’ve just stated this point, but so what? Why is it interesting? Why should anyone care?
  • What does this information imply?
  • What are the consequences of thinking this way or looking at a problem this way?
  • I’ve just described what something is like or how I see it, but why is it like that?
  • I’ve just said that something happens—so how does it happen? How does it come to be the way it is?
  • Why is this information important? Why does it matter?
  • How is this idea related to my thesis? What connections exist between them? Does it support my thesis? If so, how does it do that?
  • Can I give an example to illustrate this point?

Answering these questions may help you explain how your evidence is related to your overall argument.

How can I incorporate evidence into my paper?

There are many ways to present your evidence. Often, your evidence will be included as text in the body of your paper, as a quotation, paraphrase, or summary. Sometimes you might include graphs, charts, or tables; excerpts from an interview; or photographs or illustrations with accompanying captions.

When you quote, you are reproducing another writer’s words exactly as they appear on the page. Here are some tips to help you decide when to use quotations:

  • Quote if you can’t say it any better and the author’s words are particularly brilliant, witty, edgy, distinctive, a good illustration of a point you’re making, or otherwise interesting.
  • Quote if you are using a particularly authoritative source and you need the author’s expertise to back up your point.
  • Quote if you are analyzing diction, tone, or a writer’s use of a specific word or phrase.
  • Quote if you are taking a position that relies on the reader’s understanding exactly what another writer says about the topic.

Be sure to introduce each quotation you use, and always cite your sources. See our handout on quotations for more details on when to quote and how to format quotations.

Like all pieces of evidence, a quotation can’t speak for itself. If you end a paragraph with a quotation, that may be a sign that you have neglected to discuss the importance of the quotation in terms of your argument. It’s important to avoid “plop quotations,” that is, quotations that are just dropped into your paper without any introduction, discussion, or follow-up.

Paraphrasing

When you paraphrase, you take a specific section of a text and put it into your own words. Putting it into your own words doesn’t mean just changing or rearranging a few of the author’s words: to paraphrase well and avoid plagiarism, try setting your source aside and restating the sentence or paragraph you have just read, as though you were describing it to another person. Paraphrasing is different than summary because a paraphrase focuses on a particular, fairly short bit of text (like a phrase, sentence, or paragraph). You’ll need to indicate when you are paraphrasing someone else’s text by citing your source correctly, just as you would with a quotation.

When might you want to paraphrase?

  • Paraphrase when you want to introduce a writer’s position, but their original words aren’t special enough to quote.
  • Paraphrase when you are supporting a particular point and need to draw on a certain place in a text that supports your point—for example, when one paragraph in a source is especially relevant.
  • Paraphrase when you want to present a writer’s view on a topic that differs from your position or that of another writer; you can then refute writer’s specific points in your own words after you paraphrase.
  • Paraphrase when you want to comment on a particular example that another writer uses.
  • Paraphrase when you need to present information that’s unlikely to be questioned.

When you summarize, you are offering an overview of an entire text, or at least a lengthy section of a text. Summary is useful when you are providing background information, grounding your own argument, or mentioning a source as a counter-argument. A summary is less nuanced than paraphrased material. It can be the most effective way to incorporate a large number of sources when you don’t have a lot of space. When you are summarizing someone else’s argument or ideas, be sure this is clear to the reader and cite your source appropriately.

Statistics, data, charts, graphs, photographs, illustrations

Sometimes the best evidence for your argument is a hard fact or visual representation of a fact. This type of evidence can be a solid backbone for your argument, but you still need to create context for your reader and draw the connections you want them to make. Remember that statistics, data, charts, graph, photographs, and illustrations are all open to interpretation. Guide the reader through the interpretation process. Again, always, cite the origin of your evidence if you didn’t produce the material you are using yourself.

Do I need more evidence?

Let’s say that you’ve identified some appropriate sources, found some evidence, explained to the reader how it fits into your overall argument, incorporated it into your draft effectively, and cited your sources. How do you tell whether you’ve got enough evidence and whether it’s working well in the service of a strong argument or analysis? Here are some techniques you can use to review your draft and assess your use of evidence.

Make a reverse outline

A reverse outline is a great technique for helping you see how each paragraph contributes to proving your thesis. When you make a reverse outline, you record the main ideas in each paragraph in a shorter (outline-like) form so that you can see at a glance what is in your paper. The reverse outline is helpful in at least three ways. First, it lets you see where you have dealt with too many topics in one paragraph (in general, you should have one main idea per paragraph). Second, the reverse outline can help you see where you need more evidence to prove your point or more analysis of that evidence. Third, the reverse outline can help you write your topic sentences: once you have decided what you want each paragraph to be about, you can write topic sentences that explain the topics of the paragraphs and state the relationship of each topic to the overall thesis of the paper.

For tips on making a reverse outline, see our handout on organization .

Color code your paper

You will need three highlighters or colored pencils for this exercise. Use one color to highlight general assertions. These will typically be the topic sentences in your paper. Next, use another color to highlight the specific evidence you provide for each assertion (including quotations, paraphrased or summarized material, statistics, examples, and your own ideas). Lastly, use another color to highlight analysis of your evidence. Which assertions are key to your overall argument? Which ones are especially contestable? How much evidence do you have for each assertion? How much analysis? In general, you should have at least as much analysis as you do evidence, or your paper runs the risk of being more summary than argument. The more controversial an assertion is, the more evidence you may need to provide in order to persuade your reader.

Play devil’s advocate, act like a child, or doubt everything

This technique may be easiest to use with a partner. Ask your friend to take on one of the roles above, then read your paper aloud to them. After each section, pause and let your friend interrogate you. If your friend is playing devil’s advocate, they will always take the opposing viewpoint and force you to keep defending yourself. If your friend is acting like a child, they will question every sentence, even seemingly self-explanatory ones. If your friend is a doubter, they won’t believe anything you say. Justifying your position verbally or explaining yourself will force you to strengthen the evidence in your paper. If you already have enough evidence but haven’t connected it clearly enough to your main argument, explaining to your friend how the evidence is relevant or what it proves may help you to do so.

Common questions and additional resources

  • I have a general topic in mind; how can I develop it so I’ll know what evidence I need? And how can I get ideas for more evidence? See our handout on brainstorming .
  • Who can help me find evidence on my topic? Check out UNC Libraries .
  • I’m writing for a specific purpose; how can I tell what kind of evidence my audience wants? See our handouts on audience , writing for specific disciplines , and particular writing assignments .
  • How should I read materials to gather evidence? See our handout on reading to write .
  • How can I make a good argument? Check out our handouts on argument and thesis statements .
  • How do I tell if my paragraphs and my paper are well-organized? Review our handouts on paragraph development , transitions , and reorganizing drafts .
  • How do I quote my sources and incorporate those quotes into my text? Our handouts on quotations and avoiding plagiarism offer useful tips.
  • How do I cite my evidence? See the UNC Libraries citation tutorial .
  • I think that I’m giving evidence, but my instructor says I’m using too much summary. How can I tell? Check out our handout on using summary wisely.
  • I want to use personal experience as evidence, but can I say “I”? We have a handout on when to use “I.”

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Lunsford, Andrea A., and John J. Ruszkiewicz. 2016. Everything’s an Argument , 7th ed. Boston: Bedford/St Martin’s.

Miller, Richard E., and Kurt Spellmeyer. 2016. The New Humanities Reader , 5th ed. Boston: Cengage.

University of Maryland. 2019. “Research Using Primary Sources.” Research Guides. Last updated October 28, 2019. https://lib.guides.umd.edu/researchusingprimarysources .

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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  5. How To Write A Thesis Statement (with Useful Steps and Tips) • 7ESL

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  1. How to Write a THESIS Statement

  2. Understanding Evidence in Academic Writing

  3. What should a thesis statement ideally be?

  4. How to Write a Good Thesis Statement?

  5. Three Minute Thesis (3MT) 2011

  6. What is a thesis Statement

COMMENTS

  1. How to Write a Thesis Statement

    In an argumentative essay, your thesis statement should take a strong position. Your aim in the essay is to convince your reader of this thesis based on evidence and logical reasoning. In an expository essay, you'll aim to explain the facts of a topic or process. Your thesis statement doesn't have to include a strong opinion in this case ...

  2. Developing a Thesis Statement

    In the beginning, the thesis statement was a tool to help you sharpen your focus, limit material and establish the paper's purpose. When your paper is finished, however, the thesis statement becomes a tool for your reader. It tells the reader what you have learned about your topic and what evidence led you to your conclusion.

  3. Creating a Thesis Statement, Thesis Statement Tips

    2. Your thesis statement should be specific—it should cover only what you will discuss in your paper and should be supported with specific evidence. 3. The thesis statement usually appears at the end of the first paragraph of a paper. 4. Your topic may change as you write, so you may need to revise your thesis statement to reflect exactly ...

  4. Thesis Statements

    A thesis statement: tells the reader how you will interpret the significance of the subject matter under discussion. is a road map for the paper; in other words, it tells the reader what to expect from the rest of the paper. directly answers the question asked of you. A thesis is an interpretation of a question or subject, not the subject itself.

  5. Thesis

    Your thesis is the central claim in your essay—your main insight or idea about your source or topic.Your thesis should appear early in an academic essay, followed by a logically constructed argument that supports this central claim. A strong thesis is arguable, which means a thoughtful reader could disagree with it and therefore needs your careful analysis of the evidence to understand how ...

  6. How to write a thesis statement + Examples

    Your statement needs to be provable by evidence. As an argument, a thesis statement needs to be debatable. ... In general, a thesis statement should have one or two sentences. But the length really depends on the overall length of your project. Take a look at our guide about the length of thesis statements for more insight on this topic.

  7. Academic Guides: Writing a Paper: Thesis Statements

    The thesis statement is the brief articulation of your paper's central argument and purpose. You might hear it referred to as simply a "thesis." Every scholarly paper should have a thesis statement, and strong thesis statements are concise, specific, and arguable. Concise means the thesis is short: perhaps one or two sentences for a shorter paper.

  8. Developing A Thesis

    A good thesis has two parts. It should tell what you plan to argue, and it should "telegraph" how you plan to argue—that is, what particular support for your claim is going where in your essay. Steps in Constructing a Thesis. First, analyze your primary sources. Look for tension, interest, ambiguity, controversy, and/or complication.

  9. The Writing Center

    For the reader, the thesis statement: Serves as a "map" to guide the reader through the paper. In the same way the thesis helps you organize your paper, the thesis helps organize the reader's thinking. Once a solid thesis is presented, the reader will understand that all of the evidence presented is in service of proving the thesis.

  10. How to Write a Strong Thesis Statement: 4 Steps + Examples

    Step 4: Revise and refine your thesis statement before you start writing. Read through your thesis statement several times before you begin to compose your full essay. You need to make sure the statement is ironclad, since it is the foundation of the entire paper. Edit it or have a peer review it for you to make sure everything makes sense and ...

  11. 2.5 Writing Thesis Statements

    Working Thesis Statements. A strong thesis statement must have the following qualities: It must be arguable. A thesis statement must state a point of view or judgment about a topic. An established fact is not considered arguable. It must be supportable. The thesis statement must contain a point of view that can be supported with evidence ...

  12. 9.1 Developing a Strong, Clear Thesis Statement

    A strong thesis is specific, precise, forceful, confident, and is able to be demonstrated. A strong thesis challenges readers with a point of view that can be debated and can be supported with evidence. A weak thesis is simply a declaration of your topic or contains an obvious fact that cannot be argued.

  13. Identifying Thesis Statements, Claims, and Evidence

    Claims are statements that support the thesis statement, but like the thesis statement, are not facts. Because a claim is not a fact, it requires supporting evidence. Evidence is factual information that shows a claim is true. Usually, writers have to conduct their own research to find evidence that supports their ideas.

  14. How to Write a Thesis Statement

    2. A strong thesis statement justifies discussion. Your thesis should indicate the point of the discussion. If your assignment is to write a paper on kinship systems, using your own family as an example, you might come up with either of these two thesis statements: My family is an extended family.

  15. Strong Thesis Statements

    The thesis needs to be narrow. Although the scope of your paper might seem overwhelming at the start, generally the narrower the thesis the more effective your argument will be. Your thesis or claim must be supported by evidence. The broader your claim is, the more evidence you will need to convince readers that your position is right.

  16. 9.4: Argumentative Thesis Statements

    A strong, argumentative thesis statement should take a stance about an issue. It should explain the basics of your argument and help your reader to know what to expect in your essay. ... Evidence-Based. An argumentative thesis must be able to be supported by evidence. Claims that presuppose value systems, morals, or religious beliefs cannot be ...

  17. 7: Identifying Thesis Statements, Claims, and Evidence

    It is a thesis statement for three reasons: It is the article's main argument. It is not a fact. Someone could think that peoples' prior convictions should affect their access to higher education. It requires evidence to show that it is true. Finding Claims. A claim is statement that supports a thesis statement.

  18. How to Write an Argumentative Essay

    Provide the grounds (evidence) for the claim. Explain the warrant (how the grounds support the claim) Discuss possible rebuttals to the claim, identifying the limits of the argument and showing that you have considered alternative perspectives. The Toulmin model is a common approach in academic essays. You don't have to use these specific ...

  19. Using Evidence

    Once you have formulated your claim, your thesis (see the WTS pamphlet, " How to Write a Thesis Statement," for ideas and tips), you should use evidence to help strengthen your thesis and any assertion you make that relates to your thesis. Here are some ways to work evidence into your writing: Offer evidence that agrees with your stance up to a ...

  20. PDF Thesis Statements Defining, Developing, and Evaluating

    All papers should have a thesis statement. Depending on the type of paper, the thesis may ... • Must be proven (i.e., are claims—not facts or evidence): Thesis statements should

  21. Writing a Thesis Statement

    The kind of thesis statement you write will depend on the type of paper you are writing. Here is how to write the different kinds of thesis statements: Argumentative Thesis Statement: Making a Claim. Analytical Thesis Statement: Analyzing an Issue. Expository Thesis Statement: Explaining a Topic.

  22. Evidence

    Consider what kinds of sources and evidence you have seen in course readings and lectures. ... In general, you should have at least as much analysis as you do evidence, or your paper runs the risk of being more summary than argument. The more controversial an assertion is, the more evidence you may need to provide in order to persuade your ...