Writing a Thesis Sentence: An Introduction
Few sentences in your paper will vex you as much as the thesis sentence. And with good reason: the thesis sentence is typically that one sentence in the paper with the potential to assert, control, and structure the entire argument. Without a strong, thoughtful thesis or claim, a paper might seem unfocused.
Complicating the matter further is that different disciplines have different notions of what constitutes a good thesis sentence. Sometimes you'll encounter differences not only from discipline to discipline, but also from course to course. One of your professors might frown on a thesis sentence that announces your process: "This paper will argue X by asserting A, B, and C." Another professor might prefer this approach.
So what makes a good thesis sentence?
Despite the differences from discipline to discipline and from course to course, a good thesis will generally have the following characteristics:
A good thesis sentence will make a claim.
A good thesis rarely turns an intellectual problem into a black & white, "either/or" proposition that the writer will then defend. Rather, a good thesis offers a nuanced and interesting perspective that the writer can develop via careful analysis. This perspective must be more than an observation. For example, "America is violent" is an observation. "Americans are violent because they are fearful" (the position that Michael Moore takes in Bowling for Columbine) is an argument. Why? Because it posits a perspective. It makes a claim.
Put another way, a good thesis sentence will inspire (rather than quiet) other points of view. One might argue that America is violent because of its violent entertainment industry. Or because of the proliferation of guns. Or because of the disintegration of the family. In short, if your thesis is positing something that no one can (or would wish to) argue with, then it's not a good thesis.
A good thesis sentence will define the scope of your argument.
Your thesis sentence determines what you will discuss in your paper. It also determines what you won't discuss. Every paragraph in your paper exists in order to support your thesis and its claim. Accordingly, if one of your paragraphs seems irrelevant, you have two choices: get rid of the paragraph, or rewrite your thesis so that it is complex enough to embrace the whole of your argument.
A good thesis will shape your argument.
A good thesis not only signals to the reader what claim you're making, but also suggests how your argument will be presented. In other words, your thesis sentence should suggest the structure or shape of your argument to your reader.
Say, for example, that you are going to argue that "American fearfulness expresses itself in two curious ways: A and B." In this case, the reader understands that you are going to have two important points to cover, and that these points will appear in a certain order. If you suggest a particular ordering principle in your thesis and then abandon it, the reader could become confused.
Developing A Thesis: Sample Methods
Professors employ a variety of methods to teach students how to compose good thesis sentences. Your professor has likely demonstrated several methods to you. Here we offer sample methods employed by three instructors from the Institute for Writing and Rhetoric: John Donaghy, Sara Biggs Chaney, and Karen Gocsik. Please note that these methods do not represent a program-wide sense of the thesis and how it should be taught or practiced. In fact, no such program-wide method exists. Instructors in the Institute for Writing and Rhetoric believe that there are many approaches which can help students compose a good thesis. We offer you these examples with the hope that you will think about their underlying principles and consider how these principles might transfer to the work that you're doing in your classrooms.
JOHN DONAGHY: FINDING PATTERNS, SOLVING PROBLEMS
Professor John Donaghy's method is founded on the understanding that a good thesis comes from good analysis. In his view, analysis is a complicated process that requires readers to break down a text (event, object, or phenomenon) into parts, discovering patterns among the parts, and coming up with a theory for why these patterns exist. Professor Donaghy believes that students are initially afraid of analysis. He's puzzled by this fear. In fact, Professor Donaghy argues, we are analyzing all the time: life presents us with data that we are continually sorting by finding patterns, creating categories, and making meaning. Analysis is necessary for something as simple as crossing the street. Students can be encouraged to see that they already possess analytical skills that can be transferred to writing papers.
To illustrate how analysis brings us to the development of a thesis, Professor Donaghy suggests three steps regarding a simple reading of the following Gary Snyder poem, "Pine tree tops:"
In the blue night
frost haze, the sky glows
with the moon
pine tree tops
bend snow-blue, fade
into sky, frost, starlight.
The creak of boots. Rabbit tracks, deer tracks,
what do we know.
First, when analyzing, students need to be conscious of examining parts of a text, looking for patterns (or repeating elements). In a short poem, students can make a number of simple observations, including:
- Number of words (34)
- Number of syllables in words (mostly single syllable)
- Parts of speech: mostly nouns; adjectives are scarce; surprisingly few verbs
Second, students need to try to determine how these parts and patterns are speaking to each other. Do these parts and patterns illustrate a similarity? Draw a contrast? Create an emphasis? Together form a new observation or idea? In terms of the poem:
- Nouns: so many nouns emphasizes the "thing-ness" of the poem
- Adjectives: very few; one (blue) is attached to a noun
- Verbs: the verbs (glows, bend, fade) are gentle, yielding verbs
Finally, students can put forward a proposition. For instance: Snyder builds his poem on nouns to give power to the "things" in his scene. Or Snyder chooses verbs that seem to yield to the nouns in order to tell us how to behave in the presence of nature. This proposition, with some tweaking, can become a working thesis.
SARA BIGGS CHANEY: EVOLVING THE THESIS BY UNPACKING THE ASSUMPTIONS & MAKING COUNTER-CLAIMS
Professor Sara Chaney uses various methods to help her students arrive at a thesis. One that has proven successful is requiring students to examine their assumptions. Professor Chaney begins this instruction by introducing the student to the enthymeme. Like the syllogism (All men are mortal; Socrates is a man; therefore, Socrates is mortal), the enthymeme has three parts: the major premise, the minor premise, and the conclusion. The difference is that in the case of the syllogism, the major premise is based on fact (All men are mortal), while in the enthymeme it's based on a commonly held belief (cheating is unethical, smoking around children is a danger to their health, etc.). As Professor Chaney notes, in many cases the enthymeme is presented with the major premise left unstated: She smokes around her daughter; she endangers her daughter's health. Professor Chaney illustrates the importance in finding the "missing" major premise, arguing that unpacking an argument's unstated assumptions can help students to better analyze the texts they're writing about, and to create better texts of their own.
The key question to ask is: What must be true about the world in order for this statement to be true? Students are asked to put forth all hidden assumptions, large and small. This forces the students to dig beneath the surface of the text, to explore the structure and the nuance of the argument. In the process, ideas for a thesis will present themselves.
Once the students have drafted a thesis, Professor Chaney has a strategy (borrowed from David Rossenwasser and Jill Stephen's Writing Analytically) for evolving the thesis by putting forward counter-claims. Students sometimes make the mistake of forcing evidence to fit an overly rigid claim, or of presenting their claim in the form of a list, with few connections between the points. To evolve the thesis, Professor Chaney asks students to begin with their basic claim and then to methodically increase the complexity of that claim through the introduction of complicating evidence. This new evidence forces students to redefine their initial claims and to determine how the counter-claim might or might not be accommodated by their thesis.
For instance, a student may have written the following thesis: "Reported cases of autism in children have increased by almost 200% in the last twenty years because autism has been redefined to include less severe forms of the disorder." Professor Chaney presents students with this complicating evidence: "Some research also suggests that autism may be linked to mercury exposure in childhood vaccines." Students may weigh the evidence to see which has more merit; they might expand their thesis to point to two reasons for rising autism; they might acknowledge the truth in both statements but want to subordinate one argument to the other; they might point out a causal relationship between the two sentences (i.e., has the frequent levels of mercury exposures led to a new definition of autism in the DSM-IV, which in turn has increased the numbers of reported cases of autism?). Using any of these methods, students will have improved their thesis sentences.
KAREN GOCSIK: FINDING THE UMBRELLA IDEA
Professor Karen Gocsik advises that developing a good thesis is often the result of finding the "umbrella idea." Finding this idea requires that students move back and forth between a text's particularities and its big ideas in order to find a suitable "fit" between the two that the students can write about. This fit is then summed up in the "umbrella idea," or the big idea that all of their observations can stand under.
For instance, in an exploration of the Gospels as rhetoric, a student makes the specific observation that, in three of the four gospels, Jesus is reported as saying dramatically different things during his crucifixion. This observation by itself won't produce a paper - it's simply a statement of fact, with which no one will disagree. Nevertheless, this observation provokes a broader question: do these differences constitute a contradiction in the text? And if so, how do we understand this contradiction? What are the conditions of religious truth? Is there room for a contradiction as important as this?
Of course, these questions are too big to be addressed in an academic paper. And so the student returns to the text, still with these too-big questions haunting him. Reviewing the specific contradictions of the text, he crafts another set of questions: How should we understand the differences we see across the four gospels? What might have inspired these writers to craft this important crucifixion scene differently - particularly when, as is true of the authors of Matthew and Luke, they were using the same sources? The student posits that these differences arise from a difference in audience, historical moment, and rhetorical purpose. He turns to scholarship and finds his interpretation confirmed.
But the bigger questions persist. If the gospels are constructed to serve the earthly purposes of converting or supporting the beliefs of specific audiences, how can they also be considered as true? After doing a great deal of sketching, the student posits that perhaps the differences and contradictions are precisely what communicates the texts' truth to its audience of believers. After all, if the truth of a supreme being is beyond human grasp, then perhaps it requires a many-voiced or polyglossic narrative. With this idea in mind, the student produces a paper that not only details the variances across the texts, but offers a claim about why an audience of believers are not deterred by the differences. It is this claim that serves as the umbrella idea, synthesizing the student writer's various observations and ideas.
To sum up, successful employment of the umbrella method depends on four steps:
- Students must move fluidly back and forth between the text and their abstractions/generalizations, ready to adjust their ideas to the new evidence and new abstractions that they encounter.
- Students must sketch their ideas. Drawing their ideas helps students pull their thinking out of linear, two-dimensional modes, enabling them to see multiple possibilities for their essays.
- Students must seek an umbrella idea, under which their ideas can stand. To get to this umbrella idea, they need not only to analyze but to synthesize: they need to bring disparate ideas together, to see if they fit.
- They further need to create this synthesis by playing with language, creating an umbrella sentence that can embrace their ideas. This requires that students write and revise their thesis sentence several times as they write their paper. It also requires that students have a basic understanding of the principles of style, so that they can understand how to place their ideas in appropriate clauses, create the proper emphasis, and so on.
Alternatives to the Thesis Sentence
Sometimes, the purpose of a piece of writing is not to make a claim but to raise questions. Other times, a writer wants to leave a matter unresolved, inspiring the reader to create his or her own position. In these cases, the thesis sentence might take other forms: the thesis question or the implied thesis.
The Thesis Question
As we've said, not every piece of writing sets out to make a claim. If your purpose as a writer is to explore, for instance, the reasons for the 9/11 attacks (a topic for which you are not prepared to make a claim), your thesis might read: "What forces conspired to bring these men to crash four jetliners into American soil?"
You'll note that this question, while provocative, does not offer a sense of the argument's structure. It permits the writer to pursue all ideas, without committing to any. While this freedom might seem appealing, in fact you will find that the lack of a declarative thesis statement requires more work: you need to tighten your internal structure and your transitions from paragraph to paragraph so that the essay is clear and the reader can easily follow your line of inquiry.
The Implied Thesis
One of the most fascinating things about a thesis sentence is that it is the most important sentence in a paper - even when it's not there.
Some of our best writers never explicitly declare their theses. In some essays, you'll find it difficult to point to a single sentence that declares the argument. Still, the essay is coherent and makes a point. In these cases, the writers have used an implied thesis.
Writers use an implied thesis when they want to maintain a light hand. However, just because the writer doesn't delcare the thesis doesn't mean that she was working without one. Good writers will have their thesis clearly stated - either in their own minds, or in their notes for the paper. They may elect not to put the thesis in the paper, but every paragraph, every sentence that they write is controlled by the thesis all the same.
If you decide to write a paper with an implied thesis, be sure that you have a strong grasp of your argument and its structure. Also be sure that you supply adequate transitions, so that the reader can follow your argument with ease.
Will This Thesis Sentence Make the Grade? (A Check List)
In the end, you may have spent a good deal of time writing your thesis and still not know if it's a good one. Here are some questions to ask yourself.
- Does my thesis sentence attempt to answer (or at least to explore) a challenging intellectual question?
- Is the point I'm making one that would generate discussion and argument, or is it one that would leave people asking, "So what?"
- Is my thesis too vague? Too general? Should I focus on some more specific aspect of my topic?
- Does my thesis deal directly with the topic at hand, or is it a declaration of my personal feelings?
- Does my thesis indicate the direction of my argument? Does it suggest a structure for my paper?
- Does my introductory paragraph define terms important to my thesis? If I am writing a research paper, does my introduction "place" my thesis within the larger, ongoing scholarly discussion about my topic?
- Is the language in my thesis vivid and clear? Have I structured my sentence so that the important information is in the main clause? Have I used subordinate clauses to house less important information? Have I used parallelism to show the relationship between parts of my thesis? In short, is this thesis the very best sentence that it can be?
What else do you need to know about thesis sentences?
A good thesis usually relies on a strong introduction, sharing the work.
As your writing becomes more sophisticated, you will find that a one-sentence thesis statement cannot bear the burden of your entire argument. Therefore, you will find yourself relying increasingly on your introduction to lay the groundwork. Use your introduction to explain some of your argument's points and/or to define its terms. Save the "punch" for your thesis. For more information about creating good introductions that can support your thesis sentences, see Introductions and Conclusions elsewhere in this website.
The structure of your thesis, along with its introduction, should in some way reflect the logic that brought you to your argument.
It's helpful when structuring your thesis sentence to consider for a moment how it was that you came to your argument in the first place. No matter what discipline you are working in, you came to your idea by way of certain observations. For example, perhaps you have noticed in a History of Education course that female college students around the turn of the century seem very often to write about the idea of service to the community. How did you come to that observation? What did you observe first? And, more importantly, how did you go about exploring the significance of this observation? Did you investigate other college documents to see if the value of service was explicitly stated there? Or was this value implied in course descriptions, extra curricular possibilities, and so forth? Reconstruct for yourself how you came to your observations, and use this to help you to create a coherent introduction and thesis.
A good working thesis is your best friend.
Those writers who understand the concept of "working thesis" are way ahead of the game. A "working thesis" is a thesis that works for you, helping you to see where your ideas are going. Many students keep their working thesis in front of them at all times to help them to control the direction of their argument. But what happens when you stumble onto an idea that your thesis isn't prepared for? Or, more important, what happens when you think everything is going well in your paper and suddenly you arrive at a block? Always return to your working thesis, and give it a critical once-over. You may find that the block in your writing process is related to some limitation in your thesis. Or you may find that hidden somewhere in that working thesis is the germ of an even better idea. Stay in conversation with your thesis throughout the writing process. You'll be surprised at what you can learn from it.
Developing Strong Thesis Statements
These OWL resources will help you develop and refine the arguments in your writing.
Contributors: Stacy Weida, Karl Stolley
Last Edited: 2018-01-31 03:32:44
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:
Pollution is bad for the environment.
This thesis statement is not debatable. First, the word pollution means that something is bad or negative in some way. Further, 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 good.
Example of a debatable thesis statement:
At least 25 percent of the federal budget should be spent on limiting pollution.
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:
America's anti-pollution efforts should focus on privately owned cars.
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:
Drug use is detrimental to society.
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:
Illegal drug use is detrimental because it encourages gang violence.
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:
At least 25 percent of the federal budget should be spent on helping upgrade business to clean technologies, researching renewable energy sources, and planting more trees in order to control or eliminate pollution.
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:
America's anti-pollution efforts should focus on privately owned cars because it would allow most citizens to contribute to national efforts and care about the outcome.
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, 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:
What some people refer to as global warming is actually nothing more than normal, long-term cycles of climate change.
Claims of cause and effect: These claims argue that one person, thing, or event caused another thing or event to occur. Example:
The popularity of SUVs in America has caused pollution to increase.
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:
Global warming is the most pressing challenge facing the world today.
Claims about solutions or policies: These are claims that argue for or against a certain solution or policy approach to a problem. Example:
Instead of drilling for oil in Alaska we should be focusing on ways to reduce oil consumption, such as researching renewable energy sources.
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.