how to start a thesis statement in an essay

How to Write a Thesis Statement (Full Guide + 60 Examples)

Crafting the perfect thesis statement is an art form that sets the foundation for your entire paper.

Here is how to write a thesis statement:

Write a thesis statement by clearly stating your topic, expressing your position, and providing key points. For example: “Social media impacts teens by influencing self-esteem, enabling cyberbullying, and shaping social interactions.” Be specific, concise, and arguable.

This ultimate guide will break down everything you need to know about how to write a thesis statement, plus 60 examples.

What Is a Thesis Statement?

Table of Contents

A thesis statement is a concise summary of the main point or claim of an essay, research paper, or other piece of academic writing.

It presents the topic of your paper and your position on the topic, ideally in a single sentence.

Think of it as the roadmap to your paper—it guides your readers through your arguments and provides a clear direction.

Key Elements of a Thesis Statement

• Clarity: Your thesis should be clear and specific.
• Position: It should convey your stance on the topic.
• Argument: The statement should make a claim that others might dispute.

Types of Thesis Statements

There are various types of thesis statements depending on the kind of paper you’re writing.

Here are the main ones:

• Standard Method – This is the classic thesis statement used in many academic essays. It provides a straightforward approach, clearly stating the main argument or claim and outlining the supporting points.
• Research Paper – Designed for research papers, this type involves extensive research and evidence. It presents a hypothesis or a central argument based on your research findings.
• Informative Essay – Used for essays that aim to inform or explain a topic. It provides a clear summary of what the reader will learn.
• Persuasive Essay – For essays meant to persuade or convince the reader of a particular point of view. It clearly states your position and outlines your main arguments.
• Compare and Contrast Essay – Used when comparing two or more subjects. It highlights the similarities and differences between the subjects and presents a clear argument based on these comparisons.
• Analytical Essay – Breaks down an issue or idea into its component parts, evaluates the issue or idea, and presents this breakdown and evaluation to the audience.
• Argumentative Essay – Makes a claim about a topic and justifies this claim with specific evidence. It’s similar to the persuasive essay but usually requires more evidence and a more formal tone.
• Expository Essay – Explains or describes a topic in a straightforward, logical manner. It provides a balanced analysis of a subject based on facts without opinions.
• Narrative Essay – Tells a story or relates an event. The thesis statement for a narrative essay usually highlights the main point or lesson of the story.
• Cause and Effect Essay – Explores the causes of a particular event or situation and its effects. It provides a clear argument about the cause and effect relationship.

How to Write a Thesis Statement (Standard Method)

Writing a standard thesis statement involves a few straightforward steps.

Here’s a detailed guide:

• Identify Your Topic: What is your essay about?
• Take a Stance: What is your position on the topic?
• Outline Your Main Points: What are the key arguments that support your stance?
• Combine All Elements: Formulate a single, coherent sentence that encompasses all the above points.
• “Social media has a significant impact on teenagers because it influences their self-esteem, provides a platform for cyberbullying, and shapes their social interactions.”
• “Climate change is a pressing issue that requires immediate action because it threatens global ecosystems, endangers human health, and disrupts economies.”
• “The rise of remote work is transforming the modern workplace by increasing flexibility, reducing overhead costs, and enhancing work-life balance.”
• “School uniforms should be mandatory in public schools as they promote equality, reduce bullying, and simplify the morning routine.”
• “Digital literacy is essential in today’s world because it improves communication, enhances job prospects, and enables informed decision-making.”

How to Write a Thesis Statement for a Research Paper

Research papers require a more detailed and evidence-based thesis.

Here’s how to craft one:

• Start with a Research Question: What are you trying to find out?
• Conduct Preliminary Research: Gather evidence and sources.
• Formulate a Hypothesis: Based on your research, what do you think will happen?
• Refine Your Thesis: Make it specific and arguable.
• “The implementation of renewable energy sources can significantly reduce carbon emissions in urban areas, as evidenced by case studies in cities like Copenhagen and Vancouver.”
• “Genetically modified crops have the potential to improve food security, but their impact on biodiversity and human health requires further investigation.”
• “The use of artificial intelligence in healthcare can improve diagnostic accuracy and patient outcomes, but ethical concerns about data privacy and algorithmic bias must be addressed.”
• “Urban green spaces contribute to mental well-being and community cohesion, as demonstrated by longitudinal studies in various metropolitan areas.”
• “Microplastic pollution in oceans poses a severe threat to marine life and human health, highlighting the need for stricter waste management policies.”

How to Write a Thesis Statement for an Essay

You’ll write thesis statements a little differently for different kinds of essays.

Informative Essay

• Choose Your Topic: What are you informing your readers about?
• Outline Key Points: What are the main pieces of information?
• Draft Your Statement: Clearly state the purpose and main points.
• “The process of photosynthesis is essential for plant life as it converts light energy into chemical energy, produces oxygen, and is the basis for the food chain.”
• “The human digestive system is a complex series of organs and glands that process food, absorb nutrients, and eliminate waste.”
• “The Industrial Revolution was a period of major technological advancement and social change that reshaped the economies and societies of Europe and North America.”
• “The history of the internet from its early development in the 1960s to its current role in global communication and commerce is a fascinating journey of innovation and transformation.”
• “The impact of climate change on Arctic ecosystems is profound, affecting wildlife, indigenous communities, and global weather patterns.”

Persuasive Essay

• Identify Your Position: What are you trying to convince your reader of?
• Gather Supporting Evidence: What evidence backs up your position?
• Combine Elements: Make a clear, arguable statement.
• “Implementing a four-day workweek can improve productivity and employee well-being, as supported by studies from Iceland and Japan.”
• “The death penalty should be abolished as it is inhumane, does not deter crime, and risks executing innocent people.”
• “Public transportation should be made free to reduce traffic congestion, decrease pollution, and promote social equity.”
• “Recycling should be mandatory to conserve natural resources, reduce landfill waste, and protect the environment.”
• “Vaccination should be mandatory to protect public health and prevent the spread of contagious diseases.”

Compare and Contrast Essay

• Choose Subjects to Compare: What are the two (or more) subjects?
• Determine the Basis of Comparison: What specific aspects are you comparing?
• Draft the Thesis: Clearly state the subjects and the comparison.
• “While both solar and wind energy are renewable sources, solar energy is more versatile and can be used in a wider variety of environments.”
• “Although both capitalism and socialism aim to improve economic welfare, capitalism emphasizes individual freedom while socialism focuses on collective equality.”
• “Traditional classroom education and online learning each offer unique benefits, but online learning provides greater flexibility and access to resources.”
• “The novels ‘1984’ by George Orwell and ‘Brave New World’ by Aldous Huxley both depict dystopian societies, but ‘1984’ focuses on totalitarianism while ‘Brave New World’ explores the dangers of technological control.”
• “While iOS and Android operating systems offer similar functionality, iOS provides a more streamlined user experience, whereas Android offers greater customization options.”

How to Write a Thesis Statement for an Analytical Essay

An analytical essay breaks down an issue or idea into its component parts, evaluates the issue or idea, and presents this breakdown and evaluation to the audience.

• Choose Your Topic: What will you analyze?
• Identify Key Components: What are the main parts of your analysis?
• Formulate Your Thesis: Combine the components into a coherent statement.
• “Shakespeare’s ‘Hamlet’ explores themes of madness and revenge through the complex characterization of Hamlet and his interactions with other characters.”
• “The economic policies of the New Deal addressed the Great Depression by implementing financial reforms, creating job opportunities, and providing social welfare programs.”
• “The symbolism in ‘The Great Gatsby’ by F. Scott Fitzgerald reflects the moral decay and social stratification of the Jazz Age.”
• “The narrative structure of ‘Inception’ uses nonlinear storytelling to explore the complexities of dreams and reality.”
• “The use of color in Wes Anderson’s films enhances the whimsical and nostalgic tone of his storytelling.”

How to Write a Thesis Statement for an Argumentative Essay

An argumentative essay makes a claim about a topic and justifies this claim with specific evidence.

It’s similar to the persuasive essay but usually requires more evidence and a more formal tone.

• Choose Your Topic: What are you arguing about?
• Gather Evidence: What evidence supports your claim?
• Formulate Your Thesis: Make a clear, evidence-based statement.
• “Climate change is primarily driven by human activities, such as deforestation and the burning of fossil fuels, which increase greenhouse gas emissions.”
• “The benefits of universal healthcare outweigh the costs, as it ensures equal access to medical services, reduces overall healthcare expenses, and improves public health.”
• “The death penalty should be abolished because it violates human rights, is not a deterrent to crime, and risks the execution of innocent people.”
• “Animal testing for cosmetics should be banned as it is unethical, unnecessary, and alternatives are available.”
• “Net neutrality should be maintained to ensure a free and open internet, preventing service providers from prioritizing or blocking content.”

How to Write a Thesis Statement for an Expository Essay

An expository essay explains or describes a topic in a straightforward, logical manner.

It provides a balanced analysis of a subject based on facts without opinions.

• Choose Your Topic: What are you explaining or describing?
• Outline Key Points: What are the main facts or components?
• Formulate Your Thesis: Combine the elements into a clear statement.
• “The water cycle consists of evaporation, condensation, and precipitation, which are essential for maintaining the earth’s water balance.”
• “The human respiratory system is responsible for taking in oxygen and expelling carbon dioxide through a series of organs, including the lungs, trachea, and diaphragm.”
• “Photosynthesis in plants involves the absorption of light energy by chlorophyll, which converts carbon dioxide and water into glucose and oxygen.”
• “The structure of DNA is a double helix composed of nucleotides, which are the building blocks of genetic information.”
• “The process of mitosis ensures that cells divide correctly, allowing for growth, repair, and reproduction in living organisms.”

How to Write a Thesis Statement for a Narrative Essay

A narrative essay tells a story or relates an event.

The thesis statement for a narrative essay usually highlights the main point or lesson of the story.

• Identify the Main Point: What is the main lesson or theme of your story?
• Outline Key Events: What are the key events that support this point?
• Formulate Your Thesis: Combine the main point and events into a coherent statement.
• “Overcoming my fear of public speaking in high school taught me the value of confidence and perseverance.”
• “My summer volunteering at a wildlife rescue center showed me the importance of compassion and teamwork.”
• “A family road trip across the country provided me with unforgettable memories and a deeper appreciation for our diverse landscapes.”
• “Moving to a new city for college challenged me to adapt to new environments and build independence.”
• “A childhood friendship that ended in betrayal taught me the importance of trust and resilience.”

How to Write a Thesis Statement for a Cause and Effect Essay

A cause and effect essay explores the causes of a particular event or situation and its effects.

It provides a clear argument about the cause and effect relationship.

• Identify the Event or Situation: What are you analyzing?
• Determine the Causes: What are the reasons behind this event or situation?
• Identify the Effects: What are the consequences?
• Formulate Your Thesis: Combine the causes and effects into a coherent statement.
• “The rise in global temperatures is primarily caused by human activities, such as burning fossil fuels, and leads to severe weather patterns and rising sea levels.”
• “The introduction of invasive species in an ecosystem disrupts the balance and leads to the decline of native species.”
• “Economic recession is caused by a combination of factors, including high unemployment rates and declining consumer confidence, and results in reduced business investments and government spending.”
• “Prolonged exposure to screen time can cause digital eye strain and sleep disturbances, affecting overall health and productivity.”
• “Deforestation contributes to soil erosion and loss of biodiversity, leading to the degradation of ecosystems and reduced agricultural productivity.”

How to Write a Good Thesis Statement

Writing a good thesis statement is all about clarity and specificity.

Here’s a formula to help you:

• State the Topic: What are you writing about?
• Express Your Opinion: What do you think about the topic?
• Provide a Reason: Why do you think this way?
• “Remote work is beneficial because it offers flexibility, reduces commuting time, and increases job satisfaction.”
• “Regular exercise is essential for maintaining physical and mental health as it boosts energy levels, improves mood, and reduces the risk of chronic diseases.”
• “Reading fiction enhances empathy by allowing readers to experience different perspectives and emotions.”
• “A plant-based diet is advantageous for both personal health and environmental sustainability.”
• “Learning a second language enhances cognitive abilities and opens up cultural and professional opportunities.”

Check out this video about how to write a strong thesis statement:

How to Write a Thesis Statement (Formula + Template)

Use this simple formula to craft your thesis statement:

[Main Topic] + [Your Opinion/Position] + [Reason/Key Points]

Template: “__________ (main topic) has __________ (your opinion) because __________ (reason/key points).”

• “Electric cars are the future of transportation because they reduce greenhouse gas emissions, lower fuel costs, and require less maintenance.”
• “Social media platforms should implement stricter privacy controls because user data is vulnerable to breaches, exploitation, and misuse.”
• “Higher education should be more affordable to ensure equal access and promote social mobility.”
• “Television news often fails to provide balanced coverage, leading to public misinformation.”
• “Volunteer work should be encouraged in schools to foster community engagement and personal development.”

Thesis Statement Tips

Writing a strong thesis statement is crucial for a successful essay. Here are some tips to help you craft a killer thesis statement:

• Be Specific: Avoid vague language. Make sure your thesis statement clearly defines your argument or main point.
• Be Concise: Keep it to one or two sentences. Your thesis statement should be brief and to the point.
• Make It Arguable: Ensure that your thesis statement presents a claim or argument that can be disputed.
• Place It Appropriately: Typically, your thesis statement should be placed at the end of your introduction paragraph.
• Revise and Refine: Don’t be afraid to revise your thesis statement as you write and refine your essay. It should evolve as your ideas develop.

Common Thesis Statement Errors

Avoid these common errors when crafting your thesis statement:

• Too Broad: A thesis statement that is too broad makes it difficult to focus your essay. Narrow it down to a specific point.
• Too Vague: Avoid vague language that lacks specificity. Be clear about what you’re arguing.
• Lacks an Argument: Ensure that your thesis statement makes a clear argument or claim. Avoid statements that are purely factual or descriptive.
• Too Complex: A thesis statement should be straightforward and easy to understand. Avoid overly complex sentences.
• Off-Topic: Make sure your thesis statement is directly related to the topic of your essay. Stay on track.

How Do You Start a Thesis Statement?

Starting a thesis statement involves using clear and concise language that sets the stage for your argument.

Here are some exact words and phrases to begin with:

• “The purpose of this paper is to…”
• “This essay will argue that…”
• “In this essay, I will demonstrate that…”
• “The central idea of this paper is…”
• “This research aims to prove that…”
• “This study focuses on…”
• “This analysis will show that…”
• “The main argument presented in this paper is…”
• “The goal of this essay is to…”
• “Through this research, it will be shown that…”

How Long Should a Thesis Statement Be?

A thesis statement should be clear and concise, typically one to two sentences long.

Aim for 20 to 30 words, ensuring it includes the main topic, your position, and the key points that will be covered in your paper.

This provides a focused and precise summary of your argument, making it easier for readers to understand the main direction of your essay or research paper.

While brevity is essential, it’s also crucial to provide enough detail to convey the scope of your argument.

Avoid overly complex sentences that can confuse readers. Instead, strive for a balance between clarity and comprehensiveness, ensuring your thesis statement is straightforward and informative.

Summary Table of Thesis Statement Writing

Final thoughts: how to write a thesis statement.

Writing a strong thesis statement is the cornerstone of a successful paper.

It guides your writing and helps your readers understand your argument. Remember to be clear, specific, and concise. With practice, you’ll master the art of crafting killer thesis statements.

Read This Next:

• How to Write a Hypothesis [31 Tips + Examples]
• How to Write a Topic Sentence (30+ Tips & Examples)
• How to Write a Paragraph [Ultimate Guide + Examples] What Is A Universal Statement In Writing? (Explained) 21 Best Ways To Write Essays When You Are Stuck [Examples]

• Skip to Content
• Skip to Main Navigation
• Skip to Search

Indiana University Bloomington Indiana University Bloomington IU Bloomington

• Mission, Vision, and Inclusive Language Statement
• Locations & Hours
• Undergraduate Employment
• Graduate Employment
• Frequently Asked Questions
• Newsletter Archive
• Support WTS
• Schedule an Appointment
• Online Tutoring
• Before your Appointment
• WTS Policies
• Group Tutoring
• Students Referred by Instructors
• Paid External Editing Services
• Writing Guides
• Scholarly Write-in
• Dissertation Writing Groups
• Journal Article Writing Groups
• Early Career Graduate Student Writing Workshop
• Workshops for Graduate Students
• Teaching Resources
• Syllabus Information
• Course-specific Tutoring
• Nominate a Peer Tutor
• Tutoring Feedback
• Schedule Appointment
• Campus Writing Program

Writing Tutorial Services

How to write a thesis statement, what is a thesis statement.

Almost all of us—even if we don’t do it consciously—look early in an essay for a one- or two-sentence condensation of the argument or analysis that is to follow. We refer to that condensation as a thesis statement.

Why Should Your Essay Contain a Thesis Statement?

• to test your ideas by distilling them into a sentence or two
• to better organize and develop your argument
• to provide your reader with a “guide” to your argument

In general, your thesis statement will accomplish these goals if you think of the thesis as the answer to the question your paper explores.

How Can You Write a Good Thesis Statement?

Here are some helpful hints to get you started. You can either scroll down or select a link to a specific topic.

How to Generate a Thesis Statement if the Topic is Assigned How to Generate a Thesis Statement if the Topic is not Assigned How to Tell a Strong Thesis Statement from a Weak One

How to Generate a Thesis Statement if the Topic is Assigned

Almost all assignments, no matter how complicated, can be reduced to a single question. Your first step, then, is to distill the assignment into a specific question. For example, if your assignment is, “Write a report to the local school board explaining the potential benefits of using computers in a fourth-grade class,” turn the request into a question like, “What are the potential benefits of using computers in a fourth-grade class?” After you’ve chosen the question your essay will answer, compose one or two complete sentences answering that question.

Q: “What are the potential benefits of using computers in a fourth-grade class?” A: “The potential benefits of using computers in a fourth-grade class are . . .”

A: “Using computers in a fourth-grade class promises to improve . . .”

The answer to the question is the thesis statement for the essay.

[ Back to top ]

How to Generate a Thesis Statement if the Topic is not Assigned

Even if your assignment doesn’t ask a specific question, your thesis statement still needs to answer a question about the issue you’d like to explore. In this situation, your job is to figure out what question you’d like to write about.

A good thesis statement will usually include the following four attributes:

• take on a subject upon which reasonable people could disagree
• deal with a subject that can be adequately treated given the nature of the assignment
• express one main idea
• assert your conclusions about a subject

Let’s see how to generate a thesis statement for a social policy paper.

Brainstorm the topic . Let’s say that your class focuses upon the problems posed by changes in the dietary habits of Americans. You find that you are interested in the amount of sugar Americans consume.

You start out with a thesis statement like this:

Sugar consumption.

This fragment isn’t a thesis statement. Instead, it simply indicates a general subject. Furthermore, your reader doesn’t know what you want to say about sugar consumption.

Narrow the topic . Your readings about the topic, however, have led you to the conclusion that elementary school children are consuming far more sugar than is healthy.

You change your thesis to look like this:

Reducing sugar consumption by elementary school children.

This fragment not only announces your subject, but it focuses on one segment of the population: elementary school children. Furthermore, it raises a subject upon which reasonable people could disagree, because while most people might agree that children consume more sugar than they used to, not everyone would agree on what should be done or who should do it. You should note that this fragment is not a thesis statement because your reader doesn’t know your conclusions on the topic.

Take a position on the topic. After reflecting on the topic a little while longer, you decide that what you really want to say about this topic is that something should be done to reduce the amount of sugar these children consume.

You revise your thesis statement to look like this:

More attention should be paid to the food and beverage choices available to elementary school children.

This statement asserts your position, but the terms more attention and food and beverage choices are vague.

Use specific language . You decide to explain what you mean about food and beverage choices , so you write:

Experts estimate that half of elementary school children consume nine times the recommended daily allowance of sugar.

This statement is specific, but it isn’t a thesis. It merely reports a statistic instead of making an assertion.

Make an assertion based on clearly stated support. You finally revise your thesis statement one more time to look like this:

Because half of all American elementary school children consume nine times the recommended daily allowance of sugar, schools should be required to replace the beverages in soda machines with healthy alternatives.

Notice how the thesis answers the question, “What should be done to reduce sugar consumption by children, and who should do it?” When you started thinking about the paper, you may not have had a specific question in mind, but as you became more involved in the topic, your ideas became more specific. Your thesis changed to reflect your new insights.

How to Tell a Strong Thesis Statement from a Weak One

1. a strong thesis statement takes some sort of stand..

Remember that your thesis needs to show your conclusions about a subject. For example, if you are writing a paper for a class on fitness, you might be asked to choose a popular weight-loss product to evaluate. Here are two thesis statements:

There are some negative and positive aspects to the Banana Herb Tea Supplement.

This is a weak thesis statement. First, it fails to take a stand. Second, the phrase negative and positive aspects is vague.

Because Banana Herb Tea Supplement promotes rapid weight loss that results in the loss of muscle and lean body mass, it poses a potential danger to customers.

This is a strong thesis because it takes a stand, and because it's specific.

2. A strong thesis statement justifies discussion.

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

My family is an extended family.

This is a weak thesis because it merely states an observation. Your reader won’t be able to tell the point of the statement, and will probably stop reading.

While most American families would view consanguineal marriage as a threat to the nuclear family structure, many Iranian families, like my own, believe that these marriages help reinforce kinship ties in an extended family.

This is a strong thesis because it shows how your experience contradicts a widely-accepted view. A good strategy for creating a strong thesis is to show that the topic is controversial. Readers will be interested in reading the rest of the essay to see how you support your point.

3. A strong thesis statement expresses one main idea.

Readers need to be able to see that your paper has one main point. If your thesis statement expresses more than one idea, then you might confuse your readers about the subject of your paper. For example:

Companies need to exploit the marketing potential of the Internet, and Web pages can provide both advertising and customer support.

This is a weak thesis statement because the reader can’t decide whether the paper is about marketing on the Internet or Web pages. To revise the thesis, the relationship between the two ideas needs to become more clear. One way to revise the thesis would be to write:

Because the Internet is filled with tremendous marketing potential, companies should exploit this potential by using Web pages that offer both advertising and customer support.

This is a strong thesis because it shows that the two ideas are related. Hint: a great many clear and engaging thesis statements contain words like because , since , so , although , unless , and however .

4. A strong thesis statement is specific.

A thesis statement should show exactly what your paper will be about, and will help you keep your paper to a manageable topic. For example, if you're writing a seven-to-ten page paper on hunger, you might say:

World hunger has many causes and effects.

This is a weak thesis statement for two major reasons. First, world hunger can’t be discussed thoroughly in seven to ten pages. Second, many causes and effects is vague. You should be able to identify specific causes and effects. A revised thesis might look like this:

Hunger persists in Glandelinia because jobs are scarce and farming in the infertile soil is rarely profitable.

This is a strong thesis statement because it narrows the subject to a more specific and manageable topic, and it also identifies the specific causes for the existence of hunger.

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

Writing Tutorial Services social media channels

Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Developing Strong Thesis Statements

Welcome to the Purdue OWL

This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.

Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.

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.