Purdue Writing Center Thesis Statements

Developing Strong Thesis Statements

Summary:

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.

2.2: Developing a Thesis

This resource was written by Jaclyn M. Wells.
Last edited by Allen Brizee on March 22, 2013 .

Summary:

This resource covers how you can develop a thesis statement for your GED essay.

Thesis Statements

You may have heard teachers in the past talk about the thesis statement. The thesis statement is a sentence that summarizes the main point of your essay and previews your supporting points. The thesis statement is important because it guides your readers from the beginning of your essay by telling them the main idea and supporting points of your essay.

Generally, the thesis statement is the final sentence of your introduction. Sometimes, it is a good idea to use two sentences. For example, you might identify your main point in one sentence and then identify your supporting points in a second sentence. (Some might call this second sentence a preview sentence.) Other times, your thesis statement will only be one sentence. Either is acceptable, but remember that you need a clear thesis statement at the end of your introduction so that your reader understands your main point and knows what to expect from the rest of your essay.

To create your thesis statement, consider the following.

What is the essay prompt asking you to do? (It will be helpful to look at the key words that you’ve underlined). Are you being asked to describe something, compare the advantages of disadvantages of a topic, argue an opinion, or something else?

 


Think about each of these questions in relation to the sample essay topic.

What is the essay prompt asking you to do?

The sample essay question asks the writer to identify one goal and explain how she or he will achieve it.

What is your main idea?

For example, if you're writing an essay about your career goals and you're in the middle of a career transition, your main idea might on getting a better job.  

What are your subpoints?

Our example writer has chosen three subpoints to support her main idea: (1) finish school, (2) prepare a resume, and (3) search for jobs.

Your thesis statement should respond directly to the essay prompt and sum up your main idea. It is also helpful to preview your subpoints in the thesis statement. So, once you have everything identified (what the essay prompt is asking you to do, what your main point is, and what your subpoints are), you can put it altogether. A thesis statement for the sample essay topic might sound like this: 

A major goal I would like to accomplish in the next few years is getting a better job. My plan to get a better job is to finish school, prepare a résumé, and then search for jobs. 



- or -

It is my goal in the next few years to get a better job by finishing school, preparing a résumé, and then searching for jobs.



Now you try! Using what you have done so far—idea map and lists, outline, etc.—write a thesis statement that responds to the sample essay topic. Remember that there is no one perfect thesis statement, but do your best to respond to the essay prompt, sum up your main idea, and preview your subpoints.

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