characteristics of a thesis statement

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Thesis Characteristics

Whenever you are writing to explain something to your reader or to persuade your reader to agree with your opinion, there should be one complete sentence that expresses the main idea of your paper. That sentence is often called the thesis, or thesis statement. (Some other names it goes by are "the main idea" and "the controlling idea.") Based on everything you've read, and thought, and brainstormed, the thesis is not just your topic, but what you're saying about your topic. Another way to look at it is, once you've come up with the central question, or organizing question, of your essay, the thesis is an answer to that question. Remember, though, while you are still writing your paper, to consider what you have to be a "working thesis," one that may still be "adjusted." As you continue to write, read, and think about your topic, see if your working thesis still represents your opinion.

Handy reminders about the thesis (on this page): 

• Where to put it
• Put it as a statement
• Don't go overboard
• Focus further
• Choose the right shape

Where to Put the Thesis

The thesis usually comes within the introductory paragraph, which prepares the reader to listen to your ideas, and before the body of the paper, which develops the thesis with reasons, explanations, and evidence or examples. In fact, if you examine a well-written thesis, you will find hidden in it the questions your reader will expect you to answer in the body. For example, if your thesis is "Cannibalism, if practiced tastefully, can be acceptable in extreme circumstances," the body of your essay will develop this idea by explaining HOW it can be practiced tastefully, WHY it would be acceptable, and WHAT you would consider extreme circumstances.

Put the Thesis as a Statement

Make sure your thesis is in the form of a statement, not a question. "Can we save the Amazon rain forest?" is an ear-catching question that might be useful in the introduction, but it doesn't express an opinion or perspective as the following statements do:

• "We can save the Amazon rain forest by limiting tourist presence, boycotting goods made by companies that deplete the forest's resources, and generally educating people about the need to preserve the rain forest in order to preserve the earth's ecological systems."
• "We cannot save the Amazon rain forest since the companies that deplete its resources in their manufacturing are so widely-spread throughout the world, so politically powerful in their respective countries, and so wealthy that they are able to fight the opposition fully."

Don't go Overboard!

Make sure your thesis expresses your true opinion and not an exaggerated version of it. Don't say "Computers are wonderful" or "Computers are terrible" if what you really believe is "Computers do more good than harm" or "Computers do more harm than good." Why commit yourself to an extreme opinion that you don't really believe in, and then look like you're contradicting yourself later on?

Focus Further

Make sure your thesis covers exactly the topic you want to talk about, no more and no less. "Drugs should not be legalized" is too large a thesis if all you want to talk about is marijuana. "Boxing should be outlawed" is too small a thesis if you also want to discuss wrestling and football. Bite off as much as you can chew thoroughly--then chew it!

Choose the Right Shape

Shape your thesis to fit the question you wish to answer. A thesis can come in many forms, including the following:

• Simply stating an opinion: "Langston Hughes was a master stylist."
• Indicating categories or reasons: "Langston Hughes was a master stylist because of his vivid imagery, surprising metaphors, and effective alliteration."
• Showing two aspects of a topic and emphasizing one (in this sample, the 2nd topic in the sentence is emphasized): "While Langston Hughes was a master stylist, as a critic he had several blind spots."

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Thesis Statements

What this handout is about.

This handout describes what a thesis statement is, how thesis statements work in your writing, and how you can craft or refine one for your draft.

Introduction

Writing in college often takes the form of persuasion—convincing others that you have an interesting, logical point of view on the subject you are studying. Persuasion is a skill you practice regularly in your daily life. You persuade your roommate to clean up, your parents to let you borrow the car, your friend to vote for your favorite candidate or policy. In college, course assignments often ask you to make a persuasive case in writing. You are asked to convince your reader of your point of view. This form of persuasion, often called academic argument, follows a predictable pattern in writing. After a brief introduction of your topic, you state your point of view on the topic directly and often in one sentence. This sentence is the thesis statement, and it serves as a summary of the argument you’ll make in the rest of your paper.

What is a thesis statement?

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. The subject, or topic, of an essay might be World War II or Moby Dick; a thesis must then offer a way to understand the war or the novel.
• makes a claim that others might dispute.
• is usually a single sentence near the beginning of your paper (most often, at the end of the first paragraph) that presents your argument to the reader. The rest of the paper, the body of the essay, gathers and organizes evidence that will persuade the reader of the logic of your interpretation.

If your assignment asks you to take a position or develop a claim about a subject, you may need to convey that position or claim in a thesis statement near the beginning of your draft. The assignment may not explicitly state that you need a thesis statement because your instructor may assume you will include one. When in doubt, ask your instructor if the assignment requires a thesis statement. When an assignment asks you to analyze, to interpret, to compare and contrast, to demonstrate cause and effect, or to take a stand on an issue, it is likely that you are being asked to develop a thesis and to support it persuasively. (Check out our handout on understanding assignments for more information.)

How do I create a thesis?

A thesis is the result of a lengthy thinking process. Formulating a thesis is not the first thing you do after reading an essay assignment. Before you develop an argument on any topic, you have to collect and organize evidence, look for possible relationships between known facts (such as surprising contrasts or similarities), and think about the significance of these relationships. Once you do this thinking, you will probably have a “working thesis” that presents a basic or main idea and an argument that you think you can support with evidence. Both the argument and your thesis are likely to need adjustment along the way.

Writers use all kinds of techniques to stimulate their thinking and to help them clarify relationships or comprehend the broader significance of a topic and arrive at a thesis statement. For more ideas on how to get started, see our handout on brainstorming .

How do I know if my thesis is strong?

If there’s time, run it by your instructor or make an appointment at the Writing Center to get some feedback. Even if you do not have time to get advice elsewhere, you can do some thesis evaluation of your own. When reviewing your first draft and its working thesis, ask yourself the following :

• Do I answer the question? Re-reading the question prompt after constructing a working thesis can help you fix an argument that misses the focus of the question. If the prompt isn’t phrased as a question, try to rephrase it. For example, “Discuss the effect of X on Y” can be rephrased as “What is the effect of X on Y?”
• Have I taken a position that others might challenge or oppose? If your thesis simply states facts that no one would, or even could, disagree with, it’s possible that you are simply providing a summary, rather than making an argument.
• Is my thesis statement specific enough? Thesis statements that are too vague often do not have a strong argument. If your thesis contains words like “good” or “successful,” see if you could be more specific: why is something “good”; what specifically makes something “successful”?
• Does my thesis pass the “So what?” test? If a reader’s first response is likely to  be “So what?” then you need to clarify, to forge a relationship, or to connect to a larger issue.
• Does my essay support my thesis specifically and without wandering? If your thesis and the body of your essay do not seem to go together, one of them has to change. It’s okay to change your working thesis to reflect things you have figured out in the course of writing your paper. Remember, always reassess and revise your writing as necessary.
• Does my thesis pass the “how and why?” test? If a reader’s first response is “how?” or “why?” your thesis may be too open-ended and lack guidance for the reader. See what you can add to give the reader a better take on your position right from the beginning.

Suppose you are taking a course on contemporary communication, and the instructor hands out the following essay assignment: “Discuss the impact of social media on public awareness.” Looking back at your notes, you might start with this working thesis:

Social media impacts public awareness in both positive and negative ways.

You can use the questions above to help you revise this general statement into a stronger thesis.

• Do I answer the question? You can analyze this if you rephrase “discuss the impact” as “what is the impact?” This way, you can see that you’ve answered the question only very generally with the vague “positive and negative ways.”
• Have I taken a position that others might challenge or oppose? Not likely. Only people who maintain that social media has a solely positive or solely negative impact could disagree.
• Is my thesis statement specific enough? No. What are the positive effects? What are the negative effects?
• Does my thesis pass the “how and why?” test? No. Why are they positive? How are they positive? What are their causes? Why are they negative? How are they negative? What are their causes?
• Does my thesis pass the “So what?” test? No. Why should anyone care about the positive and/or negative impact of social media?

After thinking about your answers to these questions, you decide to focus on the one impact you feel strongly about and have strong evidence for:

Because not every voice on social media is reliable, people have become much more critical consumers of information, and thus, more informed voters.

This version is a much stronger thesis! It answers the question, takes a specific position that others can challenge, and it gives a sense of why it matters.

Let’s try another. Suppose your literature professor hands out the following assignment in a class on the American novel: Write an analysis of some aspect of Mark Twain’s novel Huckleberry Finn. “This will be easy,” you think. “I loved Huckleberry Finn!” You grab a pad of paper and write:

Mark Twain’s Huckleberry Finn is a great American novel.

You begin to analyze your thesis:

• Do I answer the question? No. The prompt asks you to analyze some aspect of the novel. Your working thesis is a statement of general appreciation for the entire novel.

Think about aspects of the novel that are important to its structure or meaning—for example, the role of storytelling, the contrasting scenes between the shore and the river, or the relationships between adults and children. Now you write:

In Huckleberry Finn, Mark Twain develops a contrast between life on the river and life on the shore.

• Do I answer the question? Yes!
• Have I taken a position that others might challenge or oppose? Not really. This contrast is well-known and accepted.
• Is my thesis statement specific enough? It’s getting there–you have highlighted an important aspect of the novel for investigation. However, it’s still not clear what your analysis will reveal.
• Does my thesis pass the “how and why?” test? Not yet. Compare scenes from the book and see what you discover. Free write, make lists, jot down Huck’s actions and reactions and anything else that seems interesting.
• Does my thesis pass the “So what?” test? What’s the point of this contrast? What does it signify?”

After examining the evidence and considering your own insights, you write:

Through its contrasting river and shore scenes, Twain’s Huckleberry Finn suggests that to find the true expression of American democratic ideals, one must leave “civilized” society and go back to nature.

This final thesis statement presents an interpretation of a literary work based on an analysis of its content. Of course, for the essay itself to be successful, you must now present evidence from the novel that will convince the reader of your interpretation.

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.

Anson, Chris M., and Robert A. Schwegler. 2010. The Longman Handbook for Writers and Readers , 6th ed. New York: Longman.

Lunsford, Andrea A. 2015. The St. Martin’s Handbook , 8th ed. Boston: Bedford/St Martin’s.

Ramage, John D., John C. Bean, and June Johnson. 2018. The Allyn & Bacon Guide to Writing , 8th ed. New York: Pearson.

Ruszkiewicz, John J., Christy Friend, Daniel Seward, and Maxine Hairston. 2010. The Scott, Foresman Handbook for Writers , 9th ed. Boston: Pearson Education.

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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How to write a thesis statement + examples

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 .

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.

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

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• Topic Sentences

Thesis Statements

A thesis statement is a sentence (sometimes more than one sentence) in the introduction that tells the reader the following information:

• What the topic of the paper is
• How the writer intends to discuss that topic
•  It gives a blueprint for how the essay will be structured
•  How the writer intends to prove or demonstrate his or her main points.

Think of your paper as a human body, and your thesis statement as the spinal cord. Without it, there is no structure.

For you as the writer, the thesis statement:

Develops through the interrelationship of thinking, reading, and writing;

Limits your research by providing you with one controlling main idea that intrigues you;

Narrows your writing to one specific claim that you can develop or prove;

Organizes your ideas so you know the important points you want to make in your paper; and

Clarifies your writing by keeping you on target to fulfill your proposed purpose.

For your readers, the thesis statement:

 Identifies the main point and sub-points of your essay clearly and quickly;

Functions as a road map so your readers can easily follow your ideas; and

Gives satisfaction at the conclusion of the paper when your readers discover you have fulfilled your promise by proving or developing your main point.

Characteristics of Effective Thesis Statements

An effective thesis statement must be  factual and narrow.

An effective thesis statement prepares readers for facts and details, but it cannot itself be a fact. It must always be an inference that demands proof or further development. These proofs come from the literature. 

UNT Dallas campus has two buildings.

Not factual enough: The UNT Dallas campus is the perfect size.

Just Right:  While some might see small universities as a disadvantage, the small campus of UNT Dallas holds many advantages for students, including a close-knit campus community, smaller class sizes, and better support from professors.

2. Narrow Topic

A good thesis should be narrow, and not too broad or too vague. If the topic is too broad, you won’t be able to cover the entire topic in your paper.  If it’s too narrow, you might not be able to find research, and your paper probably won’t be long enough. 

Too Broad: College students have a lot of responsibilities.

Too Narrow: Student workers in the Learning Commons at UNT Dallas have many responsibilities in their course work and tutoring. 

Just Right: College students who are financially independent have many responsibilities as they must maintain good grades, pay living expenses, and balance work and school.

Remember, a thesis statement is not: 

• Instead , you should argue, based on facts and literature, why or why not NASA should receive more funding.  
• Ask yourself--can I find anything in literature to prove this point, or is this MY opinion? 
• Instead, you should argue why or why not people like chocolate OR why or why not chocolate is healthy for you based on facts and literature findings. 
• Similar to the subjective opinion, ask yourself is this statement is based on facts and literature findings or if this is YOUR opinion. Although it is ok to have your own opinion, professors usually do not like to read articles about beliefs (students have been writing about these for years and years). 
• Instead, you could discuss theories about politics or religions and use literature to prove or disprove those theories.
• This is too factual (the Himalayas WERE formed from a collision of tectonic plates), and there is nothing to discuss because this IS a fact in itself. 
• Instead, you could compare and contrast the tectonic plate formation of different mountains. 

Examples of Thesis Statements

A thesis statement f or a 5 paragraph essay conta ins three parts:.

1. A Topic: the main idea of the essay

2. The Controlling Idea: what you want to say about the topic

3. The subtopics: usually 3 examples/reasons you will discuss in your paper

Here is an example  of a thesis statement.

Ex: Regularly visiting the Writing Center at UNT Dallas will help you become the best writer on the planet because it offers superhero tutors, current technology, and fantastic handouts.

The main topic explores the idea that regularly vsiting the writing center will help you become the best writer on the planet, and the subtopics further expand this opinion with three distinct examples: 1) tutors, 2) technology, and 3) the handouts.

Outline Example

The paper should be organized around the subtopics.  For example, for the thesis written above, the writer would write one body paragraph about the tutors, one about technology, and one about the handouts. 

Here is a sample essay outline based on this thesis:

• Introduce the topic of tutoring
• Thesis (last sentence of intro): Regularly visiting the Writing Center at UNT Dallas will help you become the best writer on the planet because it offers superhero tutors, current technology, and fantastic handouts.
• topic sentence
• Restate thesis
• Concluding remarks

For further assistance with the structure, see our handouts on Introductions and Conclusions and Topic Sentences.

A thesis statement for a LONG ESSAY contains two parts: A Topic: the main idea of the essay The Controlling Idea: what you want to say about the topic 

Throughout the paper, your thesis promises your readers that you will prove specific facts or develop certain ideas ; therefore, every paragraph, sentence, and word in your paper must relate to this controlling idea.

Here are some examples of thesis statements.

• Baseball, once a national pastime and even an addiction, has lost its popularity because of the new interest in more violent sports.
• Since the space program has yet to provide the American people with any substantial, practical returns, it is a waste of money and should be dissolved.
• To stop the alarming rise in the number of violent crimes committed every year, our courts must hand out tougher sentences.
• Detective stories appeal to the basic human desire for thrills.
• Hemingway's war stories helped to create a new prose style.
• Bronte utilizes light and fire to symbolize the emotional expressions of the characters.

Here is a suggested outline for a long essay and how that would look in terms of your thesis statement, topic, and controlling ideas:

• Introduce the novel Jane Eyre and the topic of symbolism
• Thesis (last sentence of intro): Bronte utilizes light and fire to symbolize the emotional expressions of the characters.
• textual examples and elaboration

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

What’s Covered:

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.

Related CollegeVine Blog Posts

Writing Studio

How do i write a thesis statement.

This page is Part 1 of a two-part handout that continues with our Thesis Statement Checklist .

What is a Thesis Statement?

In an effort to make our handouts more accessible, we have begun converting our PDF handouts to web pages. Download this page as a PDF: See p. 1 of How Do I Write a Thesis Statement Return to Writing Studio Handouts

A thesis statement is a very specific argument that guides your paper. Generally, a thesis statement consists of two parts :

• A clearly identifiable topic or subject matter
• A succinct summary of what you have to say about that topic

For your reader, a thesis functions like the case a lawyer has to make to the judge and jury in a courtroom. An effective thesis statement explains to your reader the case you are going to make and how you are going to make it.

For you as the author, your thesis can also help you to stay focused as a writer and determine what information you do (and don’t) need to include in your analysis.

Traditionally, the thesis statement is found near the end of your introduction , though this may change depending on the assignment and context. Don’t be afraid to draft a thesis statement that is more than one sentence.

A Note on Writing Process

You do not need a perfect thesis statement before you draft the rest of the paper. In fact, you will likely need to modify your thesis once you have a complete draft to make sure that your draft and your thesis match one another. If your argument evolves in productive ways as you write, your thesis should, too.

Honing and tweaking a thesis statement during the revision process is ultimately more important than having it exact and precise during the drafting process.

Characteristics of a WEAK thesis statement

• Vague: Raises an interesting topic or question but doesn’t specify an argument
• Offers plot summary, statement of fact, or obvious truths instead of an argument
• Offers opinion or conjecture rather than an argument (cannot be proven with textual evidence)
• Is too broad or too complex for the length of the paper
• Uses meaningful-sounding words, but doesn’t actually say anything of substance

Disclaimer: This is not a complete list! You can probably think of many more characteristics of a weak thesis statement.

Characteristics of a STRONG thesis statement

• Answers a specific question
• Takes a distinct position on the topic
• Is debatable (a reasonable person could argue an alternative position)
• Appropriately focused for the page length of the assignment
• Allows your reader to anticipate the organization of your argument

Having trouble drafting a thesis? Try filling in the blanks in these template statements:

• In this paper, I argue that _____, because/by _____.
• While critics argue _____, I argue _____, because _____.
• By looking at _____, I argue that _____, which is important because _____.
• The text, _____, defines _____ as _____, in order to argue _____.

Disclaimer: These are only models. They’ll be useful to help you to get started, but you’ll have to do quite a bit of tweaking before your thesis is ready for your paper.

For more on thesis statements, check out part 2: Our Thesis Statement Checklist .

Last revised: 07/15/2008 | Adapted for web delivery: 5/2021

In order to access certain content on this page, you may need to download Adobe Acrobat Reader or an equivalent PDF viewer software.

Tips and Examples for Writing Thesis Statements

Table of contents, introduction, what is a thesis statement, 1. the role of the thesis statement, a. guiding your writing:, b. engaging your readers:, 2. characteristics of a strong thesis statement, a. specificity:, b. arguability:, c. reflection of the paper’s scope:, d. conciseness:, tips for writing a strong thesis statement, 1. be specific, 2. make it arguable, 3. reflect the scope, 4. keep it concise, additional tips for writing a strong thesis statement, 1. revise and refine, 2. test your thesis, 3. seek feedback, 4. ensure clarity and precision, 5. align with your paper’s structure, 6. address the “so what” factor, thesis sentence example, examples of effective thesis statements.

Home / Guides / Writing Guides / Parts of a Paper / How to Write a Strong Thesis Statement

How to Write a Strong Thesis Statement

A thesis can be found in many places—a debate speech, a lawyer’s closing argument, even an advertisement. But the most common place for a thesis statement (and probably why you’re reading this article) is in an essay.

Whether you’re writing an argumentative paper, an informative essay, or a compare/contrast statement, you need a thesis. Without a thesis, your argument falls flat and your information is unfocused. Since a thesis is so important, it’s probably a good idea to look at some tips on how to put together a strong one.

Guide Overview

What is a “thesis statement” anyway.

• 2 categories of thesis statements: informative and persuasive
• 2 styles of thesis statements
• Formula for a strong argumentative thesis
• The qualities of a solid thesis statement (video)

You may have heard of something called a “thesis.” It’s what seniors commonly refer to as their final paper before graduation. That’s not what we’re talking about here. That type of thesis is a long, well-written paper that takes years to piece together.

Instead, we’re talking about a single sentence that ties together the main idea of any argument . In the context of student essays, it’s a statement that summarizes your topic and declares your position on it. This sentence can tell a reader whether your essay is something they want to read.

2 Categories of Thesis Statements: Informative and Persuasive

Just as there are different types of essays, there are different types of thesis statements. The thesis should match the essay.

For example, with an informative essay, you should compose an informative thesis (rather than argumentative). You want to declare your intentions in this essay and guide the reader to the conclusion that you reach.

To make a peanut butter and jelly sandwich, you must procure the ingredients, find a knife, and spread the condiments.

This thesis showed the reader the topic (a type of sandwich) and the direction the essay will take (describing how the sandwich is made).

Most other types of essays, whether compare/contrast, argumentative, or narrative, have thesis statements that take a position and argue it. In other words, unless your purpose is simply to inform, your thesis is considered persuasive. A persuasive thesis usually contains an opinion and the reason why your opinion is true.

Peanut butter and jelly sandwiches are the best type of sandwich because they are versatile, easy to make, and taste good.

In this persuasive thesis statement, you see that I state my opinion (the best type of sandwich), which means I have chosen a stance. Next, I explain that my opinion is correct with several key reasons. This persuasive type of thesis can be used in any essay that contains the writer’s opinion, including, as I mentioned above, compare/contrast essays, narrative essays, and so on.

2 Styles of Thesis Statements

Just as there are two different types of thesis statements (informative and persuasive), there are two basic styles you can use.

The first style uses a list of two or more points . This style of thesis is perfect for a brief essay that contains only two or three body paragraphs. This basic five-paragraph essay is typical of middle and high school assignments.

C.S. Lewis’s Chronicles of Narnia series is one of the richest works of the 20th century because it offers an escape from reality, teaches readers to have faith even when they don’t understand, and contains a host of vibrant characters.

In the above persuasive thesis, you can see my opinion about Narnia followed by three clear reasons. This thesis is perfect for setting up a tidy five-paragraph essay.

In college, five paragraph essays become few and far between as essay length gets longer. Can you imagine having only five paragraphs in a six-page paper? For a longer essay, you need a thesis statement that is more versatile. Instead of listing two or three distinct points, a thesis can list one overarching point that all body paragraphs tie into.

Good vs. evil is the main theme of Lewis’s Narnia series, as is made clear through the struggles the main characters face in each book.

In this thesis, I have made a claim about the theme in Narnia followed by my reasoning. The broader scope of this thesis allows me to write about each of the series’ seven novels. I am no longer limited in how many body paragraphs I can logically use.

Formula for a Strong Argumentative Thesis

One thing I find that is helpful for students is having a clear template. While students rarely end up with a thesis that follows this exact wording, the following template creates a good starting point:

___________ is true because of ___________, ___________, and ___________.

Conversely, the formula for a thesis with only one point might follow this template:

___________________ is true because of _____________________.

Students usually end up using different terminology than simply “because,” but having a template is always helpful to get the creative juices flowing.

The Qualities of a Solid Thesis Statement

When composing a thesis, you must consider not only the format, but other qualities like length, position in the essay, and how strong the argument is.

Length: A thesis statement can be short or long, depending on how many points it mentions. Typically, however, it is only one concise sentence. It does contain at least two clauses, usually an independent clause (the opinion) and a dependent clause (the reasons). You probably should aim for a single sentence that is at least two lines, or about 30 to 40 words long.

Position: A thesis statement always belongs at the beginning of an essay. This is because it is a sentence that tells the reader what the writer is going to discuss. Teachers will have different preferences for the precise location of the thesis, but a good rule of thumb is in the introduction paragraph, within the last two or three sentences.

Strength: Finally, for a persuasive thesis to be strong, it needs to be arguable. This means that the statement is not obvious, and it is not something that everyone agrees is true.

Example of weak thesis:

Peanut butter and jelly sandwiches are easy to make because it just takes three ingredients.

Most people would agree that PB&J is one of the easiest sandwiches in the American lunch repertoire.

Example of a stronger thesis:

Peanut butter and jelly sandwiches are fun to eat because they always slide around.

This is more arguable because there are plenty of folks who might think a PB&J is messy or slimy rather than fun.

Composing a thesis statement does take a bit more thought than many other parts of an essay. However, because a thesis statement can contain an entire argument in just a few words, it is worth taking the extra time to compose this sentence. It can direct your research and your argument so that your essay is tight, focused, and makes readers think.

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Writing an Effective Thesis Statement

Writing an Effective Thesis Statement Podcast

Writing an effective thesis statement transcript.

Greetings everyone. This is Kurtis Clements with another effective writing podcast. In this episode, I am going to discuss how to write an effective thesis statement. One issue to keep in mind when you write is that your words need to stand on their own. It is your responsibility to express your thoughts in a way that others can understand. Think of it this way: You will not be around to explain to readers what you meant by a certain remark or to offer another example to illustrate a fuzzy point. Indeed, the words in your composition will have to communicate meaning without your presence. What you do not want to have happen is for your audience to reach the end of a piece of your written communication and say, “So what? What’s the point?”

The “so what” of a piece of writing is the specific point the piece makes, what the writing says about its subject. The “so what” is what the writing adds up to. It is the meaning found in the writing. The “so what” of an informative essay may be Boston has a lot to offer young children. The “so what” of a business memo may be profits have exceeded expectations.

No matter the type of composition, the piece of writing must communicate meaning, not to the writer, but, rather, to an audience. The meaning found in a piece of writing, the “so what,” is the most important aspect of any piece of writing, for what good would a piece of writing be if it did not add up to something, if it did not say something to an audience? When you are working on a composition, you will need to think about what you are trying to say so that you are in a position to make sure that what you are trying to communicate is, in fact, communicated.

I know what you’re thinking: What’s all this have to do with a thesis statement? The answer: everything! Let me explain.

Every composition needs to make a clear point about its topic—otherwise, what purpose would the writing serve? One way to ensure that readers will follow along in the development of an essay is by including a written out thesis statement (more on this in just a moment). The word thesis comes from a Greek word that means “proposition” or “position.” In an essay, the thesis establishes the writer’s position, the main idea of the paper, what the writer claims to be true or important about the topic. A thesis helps readers understand the direction the essay is heading and it connects body paragraphs to a controlling idea so that the essay comes together as a unified whole.

Most thesis statements are expressed in a single declarative sentence, but depending on a number of factors such as the scope and complexity of the topic or the writer’s approach in discussing it, the thesis may require more than one sentence, but this is the exception rather than the rule. In most academic writing, the thesis will appear near or at the end of the introduction and announce to readers exactly what the body paragraphs that follow will discuss. In some writing, especially personal writing, a written-out thesis may not be necessary, but regardless the focus of the paper still needs to be clear. So, whether the thesis is written out verbatim or not, the thesis of the paper—what it will discuss—still needs to be clear.

Constructing a thesis statement will take time; in fact, like writing itself, developing a thesis is a process, so you will need to be patient and be willing to revise as necessary. A good thesis comes about the more you explore your topic whether that exploration is the result of exploratory writing like freewriting or research or long walks in which you think and think and think.

As you explore your thinking, your ideas will get clearer and clearer. Again, a thesis statement evolves over time. Begin with a working thesis—your tentative ideas about a topic—and be willing to modify the statement depending on what you discover about your topic and how your thinking changes over time. Indeed, many writers find themselves in jams because they are unwilling to deviate from their original thesis and are bent on trying to support ideas that are unrealistic, perhaps even impossible.

Still worse, some writers try to force the content to fit the idea expressed in the thesis. This won’t work. In fact, some writers approach their work so that the thesis emerges out of the writing. That’s right! Some writers don’t start with a thesis—working or otherwise—and, instead, explore their thinking in writing as a way to discover what it is they have to say about a topic. The fabulous Donald Murray, a journalist and famous writer about the process of writing, worked this way. And other writers work this way, too. And of course, many writers do not work this way and the truth is the actual process you use to develop a thesis does not matter so long as the end result is successful.

As you approach drafting a thesis, make sure you keep your purpose for writing in mind. Will you be informing? Persuading? Entertaining? Complaining? Whatever the case, you will want that purpose to be apparent from the construction of the thesis.

One good way to come up with ideas that you can use to construct a working thesis is to explore your thoughts. What do you already know about the topic? Use freewriting (or some other exploratory writing method such as brainstorming) to capture what you already know and think about the topic. Roll up your sleeves and spend 10, 15, or more minutes just writing. Write about what interests you about the topic and what you might like to know. Explore freely what is bouncing around inside your head and do not be afraid to follow your thinking wherever it takes you. Writing is an act of discovery, and you might stumble upon an interesting angle to pursue if you give yourself permission to explore. After you’ve written for a period of time, look over your writing and see if any dominant idea emerges or if some of the writing suggests a direction worth thinking about more. In a perfect world, the freewriting will produce enough of your ideas that you can almost see the beginning of a thesis.

Another good approach to producing a thesis is to conduct some research. Some assignments may not benefit from this tip, but many—even those that don’t specifically require research—will. To this end, peruse the library whether you do so physically or virtually. Poke and read around about your topic, following the discussion here and there depending on what interests you. Take some notes as you see fit.

You could also ask questions about what you wonder or would like to know about your topic. Do big-box stores such as Home Depot and Wal-Mart have an impact on local economies? What are the benefits of a vegan lifestyle? How costly are green energy sources? What steps should individuals take to safeguard against identity fraud? Avoid yes/no type questions and research accordingly. A good research question can lend itself to the development of a working thesis in that the “answer” can serve as a starting point.

So what are the characteristics of an effective thesis statement?

An effective thesis statement establishes one major idea. If a thesis introduces more than one idea, the paper will not have a tight focus. Most papers you will write will be relatively short and do not have room to discuss more than one major idea. Pay particular attention to your thesis statement if it includes the word “and” as this connecting word often joins new ideas. Note how the following thesis has more than one main idea: Healthcare reform must be addressed because so many Americans are uninsured or without adequate coverage, and politicians must work together to ensure new legislation is passed. In this example, the word “and” establishes an additional main idea and so the thesis lacks a clearly defined focus. To improve upon the thesis, the thesis would need to be streamlined and focus on one main idea. For example, a better thesis might be Politicians must work together to reform healthcare because too many Americans are without sufficient coverage.

An effective thesis statement is limited in scope. The thesis should limit the extent of the discussion to something manageable given the assignment—neither too broad nor too narrow. The thesis should establish a focus that is realistic and suitable for a substantive discussion of the main idea. Taking a stand on capital punishment, for example, is not realistic for a short research paper let alone an entire book—the topic is too broad. However, limiting the focus by narrowing the scope may work. You could argue that capital punishment does not reduce the crime rate or that lethal injection is the most humane form of capital punishment. In this way, the focus is something that realistically could be addressed in the paper.

An effective thesis statement clearly states the writer’s position. The thesis should state precisely and specifically what the paper will discuss. After reading the thesis, readers should know exactly what to expect. Avoid language that is too general, abstract, or otherwise confusing. If your thesis does not clearly establish your main idea, readers may have a difficult time following the development of the body paragraphs that follow. Here is an example of a thesis statement that is vague: Television violence is an issue that many face. Based on this thesis, do you understand what the writer is going to explore in the paper? Sure, television violence, but beyond that general subject, do you have any clear sense of what the writer will be exploring? Not at all! This thesis lacks the specificity it needs to orient readers appropriately so that they know what to expect in the discussion.

An effective thesis statement requires supporting evidence. The thesis expresses an idea that moves beyond a statement of fact and requires supporting content to “prove” the main idea. For example, a thesis that proclaims Barack Obama is the first African-American to be elected president of the United States would not be very good as it states a widely known fact. A better thesis might proclaim this: Barack Obama’s election as president of the United States marked a seminal moment in American politics. The revised thesis moves beyond simply stating a fact and, instead, presents a main idea that would require evidence to support.

There are two basic approaches to composing a thesis—forecasting the main points by embedding them in the thesis (an approach commonly referred to as the three-point thesis) or not including the main points in the thesis. Your approach will depend on the topic you are addressing as well as any particular requirements of the assignment.

A three-point thesis states the main idea of the essay and includes three key points as support. Take a look at the following thesis: Banning cigarette smoking in public places is an effective intervention to improve the public’s health by helping to reduce the dangers of second-hand smoke on non-smokers, encouraging current smokers to quit, and reducing healthcare costs. In this example, the main idea—the position the writer takes relative to the topic—is Banning cigarette smoking in public places is an effective intervention to improve the public’s health. This part of the thesis states what the writer claims to be true about the topic. How will the writer support this view? In this case, the thesis includes three telegraphed key points—by helping to reduce the dangers of second-hand smoke on non-smokers, encouraging current smokers to quit, and reducing healthcare costs.

The three-point thesis is the blueprint of the essay in that it not only establishes the main idea, but it also fleshes out the key points to that readers can anticipate a basic structure of the essay. Readers would expect each forecasted point to be discussed in the order presented—that is, the first section will discuss the first key point, the next section the second, and so on.

Another approach to composing a thesis is to state the main idea minus the key points. Using the example above, the thesis would read: Banning cigarette smoking in public places is an effective intervention to improve the public’s health. With this approach, the key points are not included in the thesis, yet the focus and direction are clear. Readers may not know the exact key points, but they understand the writer’s position on the topic and can anticipate the likely discussion that will follow. In this case, since the main idea states the view that banning smoking in public is an effective intervention to improve public health, it is logical to expect key points that address how this is so.

Please keep in mind that writing a good thesis is a process and a process requires time. While some folks might be able to come up with a humdinger of a thesis from the get-go that is not the norm. To this end, give yourself time to explore your topic and don’t be impatient. Draft a working thesis and revise as necessary. I hope you find this podcast helpful.

Thanks, everyone. Happy writing!

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Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Developing Strong Thesis Statements

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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.

Essay Writing Guide

Writing Thesis Statement

Last updated on: Jun 28, 2024

How To Write A Thesis Statement - A Step by Step Guide

By: Nova A.

14 min read

Reviewed By: Rylee W.

Published on: Feb 26, 2019

Are you tired of struggling with weak thesis statements that fail to make a compelling impact in your academic writing? 

The frustration is real. 

Without a well-crafted thesis statement, your arguments may lack focus and your ideas may appear scattered.

But fret not! 

In this comprehensive blog, we will provide you guidance along with examples and tips to refine your skills.

So, let’s start reading!

On this Page

What is Thesis Statement?

A thesis statement is the backbone of any academic paper or essay. It serves as a concise summary of the main argument or point that you will be making throughout your work. 

According to thesis statement defination:

“A thesis statement is a sentence that serves as a clear and focused roadmap for the reader. It outlines the central idea and guides the direction of the entire piece of writing.”

Importance of a Good Thesis Statement

A good thesis statement is essential for several reasons. 

Here are the key points highlighting the importance of a well-crafted thesis statement:

• A strong thesis statement helps clarify the main argument or point of your paper, providing a clear direction for both you as the writer and your readers.
• A well-written thesis statement orient your readers and enables them to anticipate the content and structure of your work.
• The thesis statement conveys your stance or position on the topic. It gives your readers an indication of what to expect and how you will approach the subject matter.
• A compelling thesis statement grabs the reader's attention , encouraging them to continue reading.
• Crafting a thesis statement forces you to clarify your main points and supporting arguments, resulting in a well-structured and coherent paper.

Characteristics of a Thesis Statement

A thesis statement possesses several key characteristics that make it effective and impactful. 

Understanding these characteristics is essential for crafting a strong and compelling thesis statement.

Here are the key characteristics to consider:

• Clear and Concise: A good thesis statement is clear, presenting the main argument or point in a straightforward manner. It avoids vague or ambiguous language, ensuring that the reader understands the central idea without confusion.
• Specific and Focused: A thesis statement is specific, addressing a particular aspect or angle of the topic. It avoids broad or general statements, honing in on a well-defined argument or position.
• Arguable and Debatable: A strong thesis statement presents an argument or claim that can be debated or challenged. It goes beyond stating a mere fact and instead takes a stance that can be supported with evidence and analysis.
• Supported by Evidence : A thesis statement is supported by evidence, which may include examples, statistics, research findings, or logical reasoning. It provides a clear link between the main argument and the supporting evidence that will be presented in the paper.
• Engaging and Intriguing: An effective thesis statement grabs the reader's attention and sparks curiosity. It presents an interesting and thought-provoking perspective, enticing the reader to continue reading.
• Relevant to the Topic: A thesis statement is directly related to the topic or subject matter of the paper. It ensures that the main argument is pertinent and contributes to the overall understanding of the topic.

How Long Should A Thesis Statement Be?

A thesis statement should generally be concise and to the point, consisting of one or two sentences.

While there is no strict rule regarding the exact length, it is recommended to keep it within this range to maintain clarity and effectiveness.

A longer thesis statement may become convoluted and dilute the main argument, potentially confusing the reader. On the other hand, an overly brief thesis statement might lack the necessary depth and specificity to adequately guide the paper. 

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How to Write a Thesis Statement 

Writing a strong thesis statement requires a thoughtful and strategic approach. Follow these steps to create an effective thesis statement:

Understand the Assignment

Carefully read and analyze the assignment prompt or guidelines. Identify the key requirements, such as the topic, purpose, and specific instructions for the thesis statement.

Conduct Research

Gather relevant information and conduct research on the topic. 

Explore different perspectives, arguments, and evidence related to your subject matter. This will help you develop a well-informed and comprehensive thesis statement.

Identify the Main Argument

Determine the main argument or position you want to present in your paper. Consider the specific angle or perspective you wish to take on the topic.

Refine Your Argument

Evaluate the ideas generated during brainstorming. Select the strongest and most compelling argument that aligns with your research and purpose.

Ensure your argument is specific, focused, and debatable.

Revise and Polish

Review your thesis statement and refine it if necessary.

Consider feedback from professors, peers, or writing tutors to improve its clarity and effectiveness.

Ensure that your thesis statement accurately represents the content and direction of your paper.

How Do I Know if My Thesis is Strong?

Determining the strength of your thesis statement is crucial to ensure its effectiveness in guiding your paper. Here are some indicators to help you assess the strength of your thesis:

Clarity and Specificity

• Is your thesis statement clear and concise, conveying the main argument without ambiguity?
• Does it provide specific details that focus the direction of your paper?

Arguability

• Does your thesis statement present a debatable claim or argument?
• Can someone reasonably hold a different viewpoint or counter-argument?

Evidence and Support

• Can you provide sufficient evidence or examples to support your thesis statement?
• Is there enough research or data available to back up your claims?

Relevance to the Topic

• Does your thesis statement directly address the topic or prompt given?
• Does it stay focused on the main subject matter without drifting into unrelated areas?

Scope and Complexity

• Does your thesis statement address the complexity of the topic?
• Does it allow for a comprehensive exploration of the subject rather than oversimplifying it?

Coherence and Logic

• Does your thesis statement present a logical argument that flows well?
• Are the main points and supporting arguments connected in a cohesive manner?

Good Thesis Statement Examples

Crafting a good thesis statement is essential for a strong and effective academic paper. 

Here are some how to write a thesis statement examples for essays on different subjects:

Thesis Statement for a Research Paper:

Thesis Statement Example on Global Warming:

Thesis Statement about Social Media:

Thesis Statement Example on Education:

Examples of Thesis Statement for Different Types of Essays

Thesis statements play a crucial role in various types of essays, guiding the writer's argument and providing a clear focus for the reader. 

Here are strong thesis statement examples in essays:

Argumentative Essay

An argumentative essay presents a balanced discussion on a controversial topic. In this essay, the writer takes a stance and provides evidence and reasoning to support their position.

Here is a thesis statement example in argumentative essay:

Persuasive Essay

A persuasive essay aims to convince the reader of a particular viewpoint through logical reasoning and persuasive techniques.

Check out this thesis statement in persuasive essay example:

Analytical Essay

An analytical essay delves into the analysis and interpretation of a piece of literature, artwork, or a concept.

Given below is a thesis statement example for an analytical essay: 

Expository Essay

An expository essay aims to provide a clear and objective explanation or analysis of a topic. The writer has to present facts, evidence, and examples to support the main idea.

Here is a thesis statement example for an expository essay:

Personal Essay

A personal essay is a form of writing that explores a specific personal experience, reflection, or insight. It often involves sharing personal anecdotes or emotions to engage the reader.

Given below is a thesis statement example for a personal essay:

Do’s and Don’ts of Thesis Statement Writing

When it comes to crafting a thesis statement, certain guidelines can help you create a strong and effective statement. 

Here's a table outlining the do's and don'ts of thesis statement writing:

All in all, crafting a strong thesis statement is crucial for a successful academic paper. With guidance and support, you can confidently present a strong argument and make a meaningful contribution to your field. 

For “ write my essay ” assistance, contact the best essay writing service: 5StarEssays.com. 

Our essay writers will help you in crafting a well structured thesis statement that will help your research paper to stand out! 

So why wait? Let us help you excel in your academic endeavors.

Frequently Asked Questions

How long is a thesis statement.

The ideal length for a statement is one to two sentences long, which is about 30-40 words. However, the length of a statement depends on the type of essay you are writing. For example, if you are writing a typical 5 paragraph essay, you wouldn’t make your thesis super long.

Similarly, if you are writing a more complex and lengthy paper, such as a research paper, the thesis statement will be written accordingly.

How to start a thesis statement?

To start a thesis statement, first, come up with a question regarding the topic at hand. Think of a topic that needs to be addressed, and then answer it with your statement.

For instance,

Question: Why should kids in the 4th-grade use computers in class?

Thesis Statement: Having computers in class can help 4th graders develop technological skills.

This example of a thesis statement will help you understand the concept.

Can a thesis statement be a question?

A thesis statement cannot be a question because it defines the purpose of the essay and states your claim.

Can a thesis statement be a hook?

No. a thesis statement cannot be a hook because both of them serve different purposes. A thesis is written at the end of an introductory paragraph and makes a claim.

In contrast, a hook sentence is the opening line of an introduction and is written to grab the reader’s attention.

What are the two elements of a thesis statement?

A good thesis statement is based on two elements. A precise and to-the-point subject and element.

As a Digital Content Strategist, Nova Allison has eight years of experience in writing both technical and scientific content. With a focus on developing online content plans that engage audiences, Nova strives to write pieces that are not only informative but captivating as well.

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Frequently asked questions

What is a thesis statement.

A thesis statement is a sentence that sums up the central point of your paper or essay . Everything else you write should relate to this key idea.

Frequently asked questions: Writing an essay

For a stronger conclusion paragraph, avoid including:

• Important evidence or analysis that wasn’t mentioned in the main body
• Generic concluding phrases (e.g. “In conclusion…”)
• Weak statements that undermine your argument (e.g. “There are good points on both sides of this issue.”)

Your conclusion should leave the reader with a strong, decisive impression of your work.

Your essay’s conclusion should contain:

• A rephrased version of your overall thesis
• A brief review of the key points you made in the main body
• An indication of why your argument matters

The conclusion may also reflect on the broader implications of your argument, showing how your ideas could applied to other contexts or debates.

The conclusion paragraph of an essay is usually shorter than the introduction . As a rule, it shouldn’t take up more than 10–15% of the text.

An essay is a focused piece of writing that explains, argues, describes, or narrates.

In high school, you may have to write many different types of essays to develop your writing skills.

Academic essays at college level are usually argumentative : you develop a clear thesis about your topic and make a case for your position using evidence, analysis and interpretation.

The “hook” is the first sentence of your essay introduction . It should lead the reader into your essay, giving a sense of why it’s interesting.

To write a good hook, avoid overly broad statements or long, dense sentences. Try to start with something clear, concise and catchy that will spark your reader’s curiosity.

Your essay introduction should include three main things, in this order:

• An opening hook to catch the reader’s attention.
• Relevant background information that the reader needs to know.
• A thesis statement that presents your main point or argument.

The length of each part depends on the length and complexity of your essay .

Let’s say you’re writing a five-paragraph  essay about the environmental impacts of dietary choices. Here are three examples of topic sentences you could use for each of the three body paragraphs :

• Research has shown that the meat industry has severe environmental impacts.
• However, many plant-based foods are also produced in environmentally damaging ways.
• It’s important to consider not only what type of diet we eat, but where our food comes from and how it is produced.

Each of these sentences expresses one main idea – by listing them in order, we can see the overall structure of the essay at a glance. Each paragraph will expand on the topic sentence with relevant detail, evidence, and arguments.

The topic sentence usually comes at the very start of the paragraph .

However, sometimes you might start with a transition sentence to summarize what was discussed in previous paragraphs, followed by the topic sentence that expresses the focus of the current paragraph.

Topic sentences help keep your writing focused and guide the reader through your argument.

In an essay or paper , each paragraph should focus on a single idea. By stating the main idea in the topic sentence, you clarify what the paragraph is about for both yourself and your reader.

A topic sentence is a sentence that expresses the main point of a paragraph . Everything else in the paragraph should relate to the topic sentence.

The thesis statement is essential in any academic essay or research paper for two main reasons:

• It gives your writing direction and focus.
• It gives the reader a concise summary of your main point.

Without a clear thesis statement, an essay can end up rambling and unfocused, leaving your reader unsure of exactly what you want to say.

The thesis statement should be placed at the end of your essay introduction .

Follow these four steps to come up with a thesis statement :

• Ask a question about your topic .
• Write your initial answer.
• Develop your answer by including reasons.
• Refine your answer, adding more detail and nuance.

An essay isn’t just a loose collection of facts and ideas. Instead, it should be centered on an overarching argument (summarized in your thesis statement ) that every part of the essay relates to.

The way you structure your essay is crucial to presenting your argument coherently. A well-structured essay helps your reader follow the logic of your ideas and understand your overall point.

The structure of an essay is divided into an introduction that presents your topic and thesis statement , a body containing your in-depth analysis and arguments, and a conclusion wrapping up your ideas.

The structure of the body is flexible, but you should always spend some time thinking about how you can organize your essay to best serve your ideas.

The vast majority of essays written at university are some sort of argumentative essay . Almost all academic writing involves building up an argument, though other types of essay might be assigned in composition classes.

Essays can present arguments about all kinds of different topics. For example:

• In a literary analysis essay, you might make an argument for a specific interpretation of a text
• In a history essay, you might present an argument for the importance of a particular event
• In a politics essay, you might argue for the validity of a certain political theory

At high school and in composition classes at university, you’ll often be told to write a specific type of essay , but you might also just be given prompts.

Look for keywords in these prompts that suggest a certain approach: The word “explain” suggests you should write an expository essay , while the word “describe” implies a descriptive essay . An argumentative essay might be prompted with the word “assess” or “argue.”

In rhetorical analysis , a claim is something the author wants the audience to believe. A support is the evidence or appeal they use to convince the reader to believe the claim. A warrant is the (often implicit) assumption that links the support with the claim.

Logos appeals to the audience’s reason, building up logical arguments . Ethos appeals to the speaker’s status or authority, making the audience more likely to trust them. Pathos appeals to the emotions, trying to make the audience feel angry or sympathetic, for example.

Collectively, these three appeals are sometimes called the rhetorical triangle . They are central to rhetorical analysis , though a piece of rhetoric might not necessarily use all of them.

The term “text” in a rhetorical analysis essay refers to whatever object you’re analyzing. It’s frequently a piece of writing or a speech, but it doesn’t have to be. For example, you could also treat an advertisement or political cartoon as a text.

The goal of a rhetorical analysis is to explain the effect a piece of writing or oratory has on its audience, how successful it is, and the devices and appeals it uses to achieve its goals.

Unlike a standard argumentative essay , it’s less about taking a position on the arguments presented, and more about exploring how they are constructed.

You should try to follow your outline as you write your essay . However, if your ideas change or it becomes clear that your structure could be better, it’s okay to depart from your essay outline . Just make sure you know why you’re doing so.

If you have to hand in your essay outline , you may be given specific guidelines stating whether you have to use full sentences. If you’re not sure, ask your supervisor.

When writing an essay outline for yourself, the choice is yours. Some students find it helpful to write out their ideas in full sentences, while others prefer to summarize them in short phrases.

You will sometimes be asked to hand in an essay outline before you start writing your essay . Your supervisor wants to see that you have a clear idea of your structure so that writing will go smoothly.

Even when you do not have to hand it in, writing an essay outline is an important part of the writing process . It’s a good idea to write one (as informally as you like) to clarify your structure for yourself whenever you are working on an essay.

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

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

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

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

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

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

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

The key difference is that a narrative essay is designed to tell a complete story, while a descriptive essay is meant to convey an intense description of a particular place, object, or concept.

Narrative and descriptive essays both allow you to write more personally and creatively than other kinds of essays , and similar writing skills can apply to both.

If you’re not given a specific prompt for your descriptive essay , think about places and objects you know well, that you can think of interesting ways to describe, or that have strong personal significance for you.

The best kind of object for a descriptive essay is one specific enough that you can describe its particular features in detail—don’t choose something too vague or general.

If you’re not given much guidance on what your narrative essay should be about, consider the context and scope of the assignment. What kind of story is relevant, interesting, and possible to tell within the word count?

The best kind of story for a narrative essay is one you can use to reflect on a particular theme or lesson, or that takes a surprising turn somewhere along the way.

Don’t worry too much if your topic seems unoriginal. The point of a narrative essay is how you tell the story and the point you make with it, not the subject of the story itself.

Narrative essays are usually assigned as writing exercises at high school or in university composition classes. They may also form part of a university application.

When you are prompted to tell a story about your own life or experiences, a narrative essay is usually the right response.

The majority of the essays written at university are some sort of argumentative essay . Unless otherwise specified, you can assume that the goal of any essay you’re asked to write is argumentative: To convince the reader of your position using evidence and reasoning.

In composition classes you might be given assignments that specifically test your ability to write an argumentative essay. Look out for prompts including instructions like “argue,” “assess,” or “discuss” to see if this is the goal.

At college level, you must properly cite your sources in all essays , research papers , and other academic texts (except exams and in-class exercises).

Add a citation whenever you quote , paraphrase , or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.

The exact format of your citations depends on which citation style you are instructed to use. The most common styles are APA , MLA , and Chicago .

An argumentative essay tends to be a longer essay involving independent research, and aims to make an original argument about a topic. Its thesis statement makes a contentious claim that must be supported in an objective, evidence-based way.

An expository essay also aims to be objective, but it doesn’t have to make an original argument. Rather, it aims to explain something (e.g., a process or idea) in a clear, concise way. Expository essays are often shorter assignments and rely less on research.

An expository essay is a common assignment in high-school and university composition classes. It might be assigned as coursework, in class, or as part of an exam.

Sometimes you might not be told explicitly to write an expository essay. Look out for prompts containing keywords like “explain” and “define.” An expository essay is usually the right response to these prompts.

An expository essay is a broad form that varies in length according to the scope of the assignment.

Expository essays are often assigned as a writing exercise or as part of an exam, in which case a five-paragraph essay of around 800 words may be appropriate.

You’ll usually be given guidelines regarding length; if you’re not sure, ask.

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Encyclopedia for Writers

Writing with ai.

• CC BY-NC-ND 4.0 by Megan McIntyre - University of Arkansas

The main idea. The argument of an essay. The thesis. It’s a tricky thing to define “thesis” because theses come in all sorts of shapes and sizes. A thesis can be a sentence, two sentences, perhaps even an entire paragraph. Every thesis, though, regardless of where in an essay it appears, does a few important things:

• A thesis acts as a unifying idea for every piece of evidence in an essay.
• A thesis results from research in addition to the writer’s own beliefs or opinions.
• A thesis answers a specific question.

There are lots of ways to create a successful thesis because good theses come in all sorts of varieties. What all successful argumentative theses have in common, though, are the following characteristics:

• A good thesis statement is arguable. In other words, the writer’s claim might be challenged or opposed.
• A good thesis statement expresses one main idea, and that idea controls what is said, what is left out, and how the delivered evidence is organized.
• A good thesis statement is specific and insightful.
• A good thesis statement encourages discussion.
• A good thesis statement is supported by relevant evidence. Every paragraph should contribute to proving the thesis to be valid

Developing a Thesis

• Define the Rhetorical Situation: The key to developing an appropriate thesis is to begin by examining the rhetorical situation: What is the purpose of your essay (e.g., to inform, to persuade, to analyze)? To whom are you writing (e.g., classmates, members of a particular interest or age group)?
• Choose a Topic: Based on the purpose of and audience for your essay, what is an appropriate topic? Moreover, what is an appropriate topic that also interests you personally?
• Start with What You Know: What do you know about your topic? What have you heard on the news about your topic? Do you have personal experiences related to your topic? If so, what are they?
• Research What You Don’t Know: Start by searching the library databases (e.g., with Academic Search Premier or WorldCat). It’s best to begin by searching with your general topic and then refining your initial results. Gather a variety of sources and start reading. Some general reading on your topic will help you with the next step.
• Take a Position: Before you take a position, be sure you have done ample reading and you are aware of the various positions regarding your topic. Most issues have more nuances than basic understandings suggest. It is not enough to be “for” or “against” an issue. You must be able to support your position with evidence and logical reasoning, and research can help you in this regard.

Refining Your Thesis

After choosing a position, in forming reasoning for your decision, you must be clear and specific. You must be able to substantiate your claim using authoritative, credible, and relevant source material. Theses tend, in draft form, to begin as general and to become more specific as you do more research. Let’s look at how we might turn a weak thesis into a strong thesis.

Weak thesis:

On April 20, 2010, the explosion of the Deepwater Horizon oil platform caused the largest man-made disaster in U.S. history.

This thesis has a serious problem for two reasons: it doesn’t actually make an argument. It simply states an unproven fact: that the Deepwater Horizon oil spill is the largest man-made disaster in U.S. history. In order to be successful, a thesis must be arguable and supported by evidence. If we consider that a thesis must be a statement that reasonable people may disagree with and a position substantiated with credible evidence, this thesis is problematic because no one will disagree with the date the oil spill occurred and because the claim that the oil spill was the largest man-made disaster in U.S. history is unsubstantiated.

A still weak thesis:

Many people are to blame for the oil spill that resulted from the explosion of the Deepwater Horizon oil platform, which caused the largest man-made environmental disaster in U.S. history.

This thesis is better than the first because it does more than state a fact, but it is still problematic: it is not specific enough, and the claim that the Deepwater Horizon oil spill is the “largest man-made” disaster is still unsubstantiated. This thesis might, instead, attempt to answer the following questions: “Who is to blame for the Deepwater Horizon oil spill?” and “Why might it be considered the largest man-made environmental disaster in the U.S. history?” A successful thesis must be arguable and must answer a specific question.

A better thesis:

BP, President George W. Bush, President Barack Obama, Republicans in Congress, Democrats in Congress, and every citizen in the United States share the blame for the oil spill that resulted from the explosion of the Deepwater Horizon oil platform, which some consider the largest man-made environmental disaster in U.S. history, and in order to prevent another such disaster, Congress must develop better regulations, oil companies must enact better maintenance procedures, and Americans must decrease their dependence on oil.

This thesis is certainly more specific, but it’s trying to do too much. Proving that all parties mentioned are to blame for the Deepwater Horizon oil spill and that the solutions mentioned will prevent another oil disaster requires covering a lot of ground. A good thesis is arguable and specific, but also has one main idea. This thesis has too many main ideas.

An even better thesis:

Oil companies and the federal government share responsibility for the Gulf oil spill that resulted from the April 2010 Deepwater Horizon explosion.

This thesis works better than the previous versions because it’s arguable, specific, and focused on one main idea, but not so specific as to greatly limit discussion of the topic. From an essay based on such a thesis, readers will expect evidence that supports the claim that oil companies and the federal government hold joint responsibility for the Gulf oil spill.

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Thesis Sentences

Characteristics of a strong thesis.

What makes a strong thesis in a college essay?

• A strong thesis is non-obvious . High school teachers needed to make sure that you and all your classmates mastered the basic form of the academic essay. Thus, they  were mostly concerned that you had a clear and consistent thesis, even if it was something obvious such as “sustainability is important.” A thesis statement like that has a wide-enough scope to incorporate several supporting points and concurring evidence, enabling the writer to demonstrate his or her mastery of a basic essay format.  College instructors, though, fully expect you to produce something more developed.
• A strong thesis is arguable . In everyday life, “arguable” is often used as a synonym for “doubtful.” For a thesis, though, “arguable” means that it’s worth arguing: it’s something with which a reasonable person might disagree. This arguability criterion dovetails with the non-obvious one: it shows that the author has deeply explored a problem and arrived at an argument that legitimately needs 3, 5, 10, or 20 pages to explain and justify. In that way, a good thesis sets an ambitious agenda for an essay. A thesis such as “sustainability is important” isn’t at all difficult to argue for, and the reader would have little intrinsic motivation to read the rest of the paper. However, an arguable thesis such as “sustainability policies will inevitably fail if they do not incorporate social justice,” brings up some healthy skepticism. Thus, the arguable thesis makes the reader want to keep reading.
• A strong thesis is well specified . Some student writers fear that they’re being too obvious if they specify their thesis early in the essay; they think that a purposefully vague thesis might be more intriguing to the reader. However, consider movie trailers: they always include the most exciting and poignant moments from the film to attract an audience. In academic essays, too, a well specified thesis indicates that the author has thought rigorously about an issue and done thorough research, which makes the reader want to keep reading. Don’t just say that a particular policy is effective or fair; say what makes it is so. If you want to argue that a particular claim is dubious or incomplete, say why in your thesis.
• A strong thesis is supportable . The angle in your thesis should be able to be supported with examples, details, facts, observations, and other types of evidence, including research as appropriate.
• A strong thesis includes implications . Suppose your assignment is to write an essay about some aspect of the history of linen production and trade, a topic that may seem exceedingly arcane. And suppose you have constructed a well supported and creative argument that linen was so widely traded in the ancient Mediterranean that it actually served as a kind of currency. [1]   That’s a strong, insightful, arguable, well specified thesis. But which of these thesis statements do you find more engaging?

Version A: Linen served as a form of currency in the ancient Mediterranean world, connecting rival empires through circuits of trade. Version B: Linen served as a form of currency in the ancient Mediterranean world, connecting rival empires through circuits of trade. The economic role of linen raises important questions about how shifting environmental conditions can influence economic relationships and, by extension, political conflicts.

Strong thesis sentences have angles that are arguable, well-specified, and supportable. Not all topics and angles lend themselves to implications. However, if you’ve chosen a topic and created an angle that allows you to put your claims into a broader context, that additional context and its implications can create additional interest in an essay.

H ow do you produce a good, strong thesis? And how do you know when you’ve gotten there? Many instructors and writers find useful a metaphor based on this passage by Oliver Wendell Holmes, Sr. [2] :

There are one-story intellects, two-story intellects, and three-story intellects with skylights. All fact collectors who have no aim beyond their facts are one-story men. Two-story men compare, reason, generalize using the labor of fact collectors as their own. Three-story men idealize, imagine, predict—their best illumination comes from above the skylight.

The biggest benefit of the three-story metaphor is that it describes a process for building a thesis. To build the first story, you first have to get familiar with the complex, relevant facts surrounding the problem or question. You have to be able to describe the situation thoroughly and accurately. Then, with that first story built, you can layer on the second story by formulating the insightful, arguable point that animates the analysis. That’s often the most effortful part: brainstorming, elaborating and comparing alternative ideas, finalizing your point. With that specified, you can frame the third story by articulating why the point you make matters beyond its particular topic or case.

For example, imagine you have been assigned an essay about the impact of online learning in higher education. You would first construct an account of the origins and multiple forms of online learning and assess research findings about its use and effectiveness. If you’ve done that well, you’ll probably come up with a well considered opinion that wouldn’t be obvious to readers who haven’t looked at the issue in depth. Maybe you’ll want to argue that online  learning is a threat to the academic community. Or perhaps you’ll want to make the case that online learning opens up pathways to college degrees that traditional campus-based learning does not. In the course of developing your central, argumentative point, you’ll come to recognize its larger context; in this example, you may claim that online learning can serve to better integrate higher education with the rest of society, as online learners bring their educational and career experiences together.

To outline this example:

• Basic Thesis/1st Story : Online learning is becoming more prevalent and takes many different forms. ( has a topic and angle, and is supportable, but the angle is broad. The angle would be more interesting if it offered an argument about an issue related to online learning.)
• Strong Thesis/2nd Story : Strong thesis: While most observers see it as a  transformation  of higher education, online learning is better thought of an  extension  of higher education in that it reaches learners who aren’t disposed to participate in traditional campus-based education.( has a topic and angle, angle is arguable, supportable, and well-specified )
• Stronger Thesis/3rd Story : Online learning appears to be a promising way to better integrate higher education with other institutions in society, as online learners integrate their educational experiences with the other realms of their life, promoting the freer flow of ideas between the academy and the rest of society. ( has a topic and angle, angle is arguable, supportable, and well-specified, angle contains implications that set the argument within a broader context )

Here’s one more example:

• Basic Thesis/1st Story : Scientists disagree about the likely impact in the U.S. of the light brown apple moth (LBAM) , an agricultural pest native to Australia. ( has a topic and an angle, and the angle is supportable, but the angle is broad. The angle would be more interesting if it offered an argument about an issue related to the light brown apple moth.)
• Strong Thesis/2nd Story : Research findings to date suggest that the decision to spray pheromones over the skies of several southern Californian counties to combat the light brown apple moth was poorly thought out. ( has a topic and angle, angle is arguable, supportable, and well-specified )
• Stronger Thesis/3rd Story : Together, the scientific ambiguities and the controversial response strengthen the claim that industrial-style approaches to pest management are inherently unsustainable. ( has a topic and angle, angle is arguable, supportable, and well-specified, angle contains implications that set the argument within a broader context )

A thesis statement that stops at the first story isn’t usually considered a thesis. A two-story thesis is usually considered competent, though some two-story theses are more intriguing and ambitious than others. A thoughtfully crafted and well informed three-story thesis, which sets the angle in a broader context,  puts the author on a smooth path toward an interesting and insightful essay. As a beginning writer, know that you need to “build” at least two stories into your thesis; the third is something to attempt and strive for.

Here’s more information on how to write a strong thesis sentence, offering your specific assertion that is feasible to support, and setting that assertion within a broader context.

• For more see Fabio Lopez-Lazaro “Linen.” In Encyclopedia of World Trade from Ancient Times to the Present . Armonk: M.E. Sharpe, 2005. ↵
• Oliver Wendell Holmes Sr., The Poet at the Breakfast Table (New York: Houghton & Mifflin, 1892) ↵
• The metaphor is extraordinarily useful even though the passage is annoying. Beyond the sexist language of the time, it displays condescension toward “fact-collectors” which reflects a general modernist tendency to elevate the abstract and denigrate the concrete. In reality, data-collection is a creative and demanding craft, arguably more important than theorizing. ↵
• Characteristics of a Strong Thesis. Revision and adaptation of the page The Three-Story Thesis at https://courses.lumenlearning.com/wm-englishcomposition1/chapter/text-the-three-story-thesis/, which is a revision and adaptation of the page The three-story thesis: from the ground up at http://textbooks.opensuny.org/writing-in-college-from-competence-to-excellence/. Authored by : Susan Oaks. Provided by : Empire State College. Project : College Writing. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• The Three-Story Thesis. Provided by : Lumen Learning. Located at : https://courses.lumenlearning.com/wm-englishcomposition1/chapter/text-the-three-story-thesis/ . Project : English Composition I. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
• The three-story thesis: from the ground up. Authored by : Amy Guptill. Provided by : The College at Brockport, SUNY. Located at : http://textbooks.opensuny.org/writing-in-college-from-competence-to-excellence/ . Project : Writing in College: From Competence to Excellence. License : CC BY-SA: Attribution-ShareAlike
• image of pagoda's three stories. Authored by : Takashi Hososhima. Provided by : Pixabay. Located at : https://flic.kr/p/gGhtya . License : CC0: No Rights Reserved
• video How to Write a Strong Thesis Statement. Provided by : Scribbr. Located at : https://www.youtube.com/watch?v=DFp1uGTXo4Q&t=62s . License : Other . License Terms : YouTube video
• image of a strong woman climbing a wall. Authored by : Jason Goh. Provided by : Pixabay. Located at : https://pixabay.com/photos/climbing-rope-rappelling-wall-rock-756669/ . License : CC0: No Rights Reserved
• image of a man lifting a barbell with weights. Authored by : Frederick Ochari. Provided by : Pixabay. Located at : https://pixabay.com/photos/workout-gym-fitness-exercise-5350078/ . License : CC0: No Rights Reserved

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Writing Resources

Features of a successful thesis.

This handout is available for download in DOCX format and PDF format .

• A thesis must consist of a claim. Questions are not claims; nor are simple descriptions. A thesis is not a topic or theme, either. It is a contention —something to be argued.
• A thesis should not be obviously true or false. If a claim is obviously true, there is no need to argue for it; and if is it obviously false, there is no reason to argue for it, either. Rather, the claim should be plausible, but in need of argument and evidence to establish its veracity.
• A thesis should not be overly abstract or general. It must be specific enough to be arguable, that is, specific enough to support with the evidence available to you.
• A thesis should be original. It should not merely recapitulate another writer’s argument. However, this does not mean that a thesis cannot be based on or influenced by the arguments of other writers.
• There must be evidence available to support the claim made in the thesis.
• The claim must be of an appropriate scope such that it can be adequately argued within the length of the paper.
• A thesis should be clear. Remove as much ambiguity as possible from your thesis statement, and define any technical or ambiguous terms (e.g., “Durkheim-Boas tradition,” “reductionism”) that appear in your thesis or essay.
• A thesis should be concise. Generally, a thesis will be contained within a single sentence, although sometimes more complex theses are developed over two or three sentences.
• A thesis should be obvious to your reader. Often, a thesis statement begins with a phrase like “I will argue…,” “In this essay I will contend…,” etc. Theses are often stated in the first paragraph or in introductory paragraphs.

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Characteristics of a Good Thesis Statement

Erin schreiner.

A well-written thesis statement establishes the central focus of a paper. By reading the thesis statement, readers should be able to determine what the author of the paper will aim to prove throughout the essay. By composing an engaging and effective thesis, writers can create a compelling beginning to their paper that both draws readers in and creates excitement about the paper content.

Explore this article

• Argumentative
• Alludes to Supports
• Encompassing of Paper Content

1 Argumentative

All thesis statements should be argumentative in nature, reports the University of Houston. Do not begin your essay with a factual statement, such as, “The sky is blue,” because this statement is irrefutable and, therefore, not something you can effectively argue.

Effective thesis statements indicate specifically what the essay will be about. Do not make an overly broad statement in your thesis, such as, “Animal cruelty is bad.” Instead, compose a statement that is direct and to the point, such as, “Animal cruelty has an impact on all humans.” By composing a specific thesis statement, you increase the likelihood that you can effectively prove your argument.

When you begin your essay with a thesis statement that attracts interest, you engage your audience and entice them to keep reading. Your thesis statement should be as provocative as possible, given your topic. Along with the rest of your introductory paragraph, your thesis serves as a hook, pulling your audience into your piece.

4 Alludes to Supports

Although you do not want to go into specifics regarding your supports until your body paragraphs, you should make allusions to these supports in your thesis. For example, if you are going to argue that students should be taught basic sex education in elementary school and your body paragraphs include information about the proven effectiveness of such programs and what these programs should include, you could compose a thesis statement that says, “While some feel that elementary students are too young to receive basic sex education, programs aimed at young learners can be beneficial if properly organized.”

5 Encompassing of Paper Content

You should not discuss anything in your paper that is not stated, or at least hinted at, in your thesis. This statement should encompass all of the topics you will explore within the essay as a whole, even if it only broadly hints at these points. If your thesis states that your paper will be about the importance of student participation in sports, you should not discuss the rules of soccer in your paper, as this discussion is not directly germane to the thesis you laid out.

About the Author

Erin Schreiner is a freelance writer and teacher who holds a bachelor's degree from Bowling Green State University. She has been actively freelancing since 2008. Schreiner previously worked for a London-based freelance firm. Her work appears on eHow, Trails.com and RedEnvelope. She currently teaches writing to middle school students in Ohio and works on her writing craft regularly.

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Numerical investigation on electromagnetic scattering characteristics of circulation control wing surface.

1. Introduction

2. computational models and numerical methods, 3. results and discussion, 3.1. the electromagnetic scattering characteristics of basic carrier, 3.2. the electromagnetic scattering characteristics of rudder carrier, 3.3. the electromagnetic scattering characteristics of cc-wing, 3.3.1. static scattering characterization, 3.3.2. dynamic scattering characterization, 4. conclusions, author contributions, data availability statement, conflicts of interest.

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Wang, D.; Cui, P.; Du, W.; Liu, H. Numerical Investigation on Electromagnetic Scattering Characteristics of Circulation Control Wing Surface. Aerospace 2024 , 11 , 781. https://doi.org/10.3390/aerospace11090781

Wang D, Cui P, Du W, Liu H. Numerical Investigation on Electromagnetic Scattering Characteristics of Circulation Control Wing Surface. Aerospace . 2024; 11(9):781. https://doi.org/10.3390/aerospace11090781

Wang, Dechen, Peng Cui, Wei Du, and Hao Liu. 2024. "Numerical Investigation on Electromagnetic Scattering Characteristics of Circulation Control Wing Surface" Aerospace 11, no. 9: 781. https://doi.org/10.3390/aerospace11090781

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