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.
What is a “thesis statement” anyway?
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.
Like what you saw?
Get weekly, valuable content on writing, research, and education technology. Submit your email below to sign up!
Don't forget to support your writing with our most popular citation styles: APA, MLA & Chicago!
This section describes the main elements of a written thesis at the bachelor’s and master’s levels. Although the specific structure described here is most relevant for empirical theses, much of the advice is also relevant for theoretical work. Please note that the formal requirements vary between different disciplines, and make sure to confer the guidelines that apply in your field.
For the contents in the various sections you may also confer Organising your writing.
Abstract and foreword
Most readers will turn first to the abstract. Use it as an opportunity to spur the reader’s interest. The abstract should summarise the main contents of your thesis, especially the thesis statement, but does not need to cover every aspect of the main text. The main objective is to give the reader a good idea of what the thesis is about.
In general the abstract should be the last thing that you write, when you know what you have actually written. It is nevertheless a good idea to work on a draft continuously. Writing a good abstract is difficult, since it should only include the most important points of your work. But this is also why working on your abstract can be useful – it forces you to identify exactly what it is you are writing about.
There are usually no formal requirements for forewords, but it is common practice to thank your supervisors, informants, and others who have helped and supported you. If you have received any grants or research residencies, you should also acknowledge these.
Note: Shorter assignments do not require abstracts and forewords.
Your introduction has two main purposes: 1) to give an overview of the main points of your thesis; and 2) awaken the reader’s interest. It’s not a bad idea to go through the introduction one last time when the writing is done, to ensure that it connects well with your conclusion.
Tip: For a nice, stylistic twist you can reuse a theme from the introduction in your conclusion. For example, you might present a particular scenario in one way in your introduction, and then return to it in your conclusion from a different – richer or contrasting – perspective.
Your introduction should include:
- The background for your choice of theme
- A discussion of your research question or thesis statement
- A schematic outline of the remainder of your thesis
The sections below discuss each of these elements in turn.
The background sets the general tone for your thesis. It should make a good impression and convince the reader why the theme is important and your approach relevant. Even so, it should be no longer than necessary.
What is considered a relevant background depends on your field and its traditions. Background information might be historical in nature, or it might refer to previous research or practical considerations. You can also focus on a specific text, thinker or problem.
Academic writing often means having a discussion with yourself (or some imagined opponent). To open your discussion, there are several options available. You may, for example:
- refer to a contemporary event
- outline a specific problem; a case study or an example
- review the relevant research/literature to demonstrate the need for this particular type of research
If it is common in your discipline to reflect upon your experiences as a practitioner, this is the place to present them. In the remainder of your thesis, this kind of information should be avoided, particularly if it has not been collected systematically.
Tip: Do not spend too much time on your background and opening remarks before you have gotten started with the main text.
Write three different opening paragraphs for your thesis using different literary devices
a) “set the scene” with a (short) narrative
b) adopt a historical approach to the phenomenon you intend to discuss
c) take an example from the media to give your topic current relevance.
Observe to what extent these different openings inspire you, and choose the approach most appropriate to your topic. For example, do you want to spur emotions, or remain as neutral as possible? How important is the historical background? The exercise can be done in small groups or pairs. Discuss what makes an opening paragraph successful (or not). How does your opening paragraph shed light on what is to follow? What will the reader’s expectations be?
1.2 Defining the scope of your thesis
One of the first tasks of a researcher is defining the scope of a study, i.e., its area (theme, field) and the amount of information to be included. Narrowing the scope of your thesis can be time-consuming. Paradoxically, the more you limit the scope, the more interesting it becomes. This is because a narrower scope lets you clarify the problem and study it at greater depth, whereas very broad research questions only allow a superficial treatment.
The research question can be formulated as one main question with (a few) more specific sub-questions or in the form of a hypothesis that will be tested.
Your research question will be your guide as your writing proceeds. If you are working independently, you are also free to modify it as you go along.
How do you know that you have drafted a research question? Most importantly, a research question is something that can be answered. If not, you have probably come up with a theme or field, not a question.
- Use interrogative words: how, why, which (factors/situations) etc.
- Some questions are closed and only invoke concrete/limited answers. Others will open up for discussions and different interpretations.
Asking “What …?” is a more closed question than asking “How?” or “In what way?”
Asking “Why” means you are investigating what causes of a phenomenon. Studying causality is methodologically demanding.
- Feel free to pose partially open questions that allow discussions of the overall theme, e.g., “In what way …?”; “How can we understand [a particular phenomenon]?”
- Try to condense your research question into one general question – and perhaps a few more specific sub-questions (two or three will usually suffice).
The outline gives an overview of the main points of your thesis. It clarifies the structure of your thesis and helps you find the correct focus for your work. The outline can also be used in supervision sessions, especially in the beginning. You might find that you need to restructure your thesis. Working on your outline can then be a good way of making sense of the necessary changes. A good outline shows how the different parts relate to each other, and is a useful guide for the reader.
It often makes sense to put the outline at the end of the introduction, but this rule is not set in stone. Use discretion: What is most helpful for the reader? The information should come at the right point – not too early and not too late.
2. Theory section
The theory used in an empirical study is meant to shed light on the data in a scholarly or scientific manner. It should give insights not achievable by ordinary, everyday reflections. The main purpose of using theory is to analyse and interpret your data. Therefore, you should not present theoretical perspectives that are not being put to use. Doing so will create false expectations, and suggests that your work is incomplete.
Not all theses have a separate theory section. In the IMRaD format the theory section is included in the introduction, and the second chapter covers the methods used.
What kind of theory should you choose? Since the theory is the foundation for your data analysis it can be useful to select a theory that lets you distinguish between, and categorise different phenomena. Other theories let you develop the various nuances of a phenomenon. In other words, you have a choice of either reducing the complexity of your data or expanding upon something that initially looks simple.
How much time and space should you devote to the theory chapter? This is a difficult question. Some theses dwell too long on theory and never get to the main point: the analysis and discussion. But it is also important to have read enough theory to know what to look for when collecting data. The nature of your research should decide: Some studies do not require much theory, but put more emphasis on the method, while other studies need a rich theory section to enable an interesting discussion.
3. Method section
In a scholarly research article, the section dealing with method is very important. The same applies to an empirical thesis. For students, this can be a difficult section to write, especially since its purpose may not always be clear.
The method chapter should not iterate the contents of methodology handbooks. For example, if you have carried out interviews, you do not need to list all the different types of research interview. You also do not need to describe the differences between quantitative and qualitative methods, or list all different kinds of validity and reliability.
What you must do is to show how your choice of design and research method is suited to answering your research question(s). Demonstrate that you have given due consideration to the validity and reliability of your chosen method. By “showing” instead of “telling”, you demonstrate that you have understood the practical meaning of these concepts. This way, the method section is not only able to tie the different parts of your thesis together, it also becomes interesting to read!
- Show the reader what you have done in your study, and explain why. How did you collect the data? Which options became available through your chosen approach?
- What were your working conditions? What considerations did you have to balance?
- Tell the reader what you did to increase the validity of your research. E.g., what can you say about the reliability in data collection? How do you know that you have actually investigated what you intended to investigate? What conclusions can be drawn on this basis? Which conclusions are certain and which are more tentative? Can your results be applied in other areas? Can you generalise? If so, why? If not, why not?
- You should aim to describe weaknesses as well as strengths. An excellent thesis distinguishes itself by defending – and at the same time criticising – the choices made.
Your analysis, along with your discussion, will form the high light of your thesis. In the IMRaD format, this section is titled “Results”. This is where you report your findings and present them in a systematic manner. The expectations of the reader have been built up through the other chapters, make sure you fulfill these expectations.
To analyse means to distinguish between different types of phenomena – similar from different. Importantly, by distinguishing between different phenomena, your theory is put to work. Precisely how your analysis should appear, however, is a methodological question. Finding out how best to organise and present your findings may take some time. A good place to look for examples and inspiration is repositories for master’s theses.
If you are analysing human actions, you may want to engage the reader’s emotions. In this case it will be important to choose analytical categories that correlate to your chosen theory. Engaging emotions is not the main point, but a way to elucidate the phenomenon so that the reader understands it in a new and better way.
Note: Not all theses include a separate chapter for analysis.
In many thesis the discussion is the most important section. Make sure that you allocate enough time and space for a good discussion. This is your opportunity to show that you have understood the significance of your findings and that you are capable of applying theory in an independent manner.
The discussion will consist of argumentation. In other words, you investigate a phenomenon from several different perspectives. To discuss means to question your findings, and to consider different interpretations. Here are a few examples of formulations that signal argumentation:
- On the one hand … and on the other
- But is it really true that…
- … on can it also be supposed…?
- … another possible explanation may be …
6. Conclusion – or summing up?
The final section of your thesis may take one of several different forms. Some theses need a conclusion, while for others a summing up will be appropriate. The decisive factor will be the nature of your thesis statement and research question.
Open research questions cannot always be answered, but if a definite answer is possible, you must provide a conclusion. The conclusion should answer your research question(s). Remember that a negative conclusion is also valid.
A summing up should repeat the most important issues raised in your thesis (particularly in the discussion), although preferably stated in a (slightly) different way. For example, you could frame the issues within a wider context.
Placing your thesis in perspective
In the final section you should place your work in a wider, academic perspective and determine any unresolved questions. During the work, you may have encountered new research questions and interesting literature which could have been followed up. At this point, you may point out these possible developments, while making it clear for the reader that they were beyond the framework of your current project.
- Briefly discuss your results through a different perspective. This will allow you to see aspects that were not apparent to you at the project preparation stage
- Highlight alternative research questions that you have found in the source materials used in the project
- Show how others have placed the subject area in a wider context
- If others have drawn different conclusions from yours, this will provide you with ideas of new ways to view the research question
- Describe any unanswered aspects of your project
- Specify potential follow up and new projects
A thesis should “bite itself in the tail”
There should be a strong connection between your conclusion and your introduction. All the themes and issues that you raised in your introduction must be referred to again in one way or another. If you find out at this stage that your thesis has not tackled an issue that you raised in the introduction, you should go back to the introduction and delete the reference to that issue. An elegant way to structure the text is to use the same textual figure or case in the beginning as well as in the end. When the figure returns in the final section, it will have taken on a new and richer meaning through the insights you have encountered, created in the process of writing.
J. Schimel, 2012 Writing Science. How to write papers that get cited and proposals that get funded. New York: Oxford University Press
Last updated: December 16, 2013