the difference between topic sentence and thesis

Difference Between Topic Sentence Vs. Thesis Statement

After being introduced during the K-12 years of a student's education, academic writing is a mainstay in college and higher education. With proper format and technique being a major aspect of academic writing, it is essential for students to understand the differences between a topic sentence and a thesis statement.

Explore this article

• Essay Format
• Topic Sentences
• Thesis Statement
• Differences

1 Essay Format

Before delving into the differences between topic sentences and thesis statements, it is important to first establish the general format for a written essay. For K-12 students, written essays can commonly require the five-paragraph format, which consist of an introduction, three paragraphs that make up the body of the paper and the final paragraph as the conclusion. By understanding this general format of academic writing, it is easier to understand where topic sentences and thesis statements fit into place.

2 Topic Sentences

Topic sentences are used in each major paragraph of an essay paper. The purposes of these sentences are to develop and state the key idea of each paragraph in an effort to define the point of the paragraph. For example, when writing an essay paper on the effects of the Gettysburg Address, one of the paragraphs in the body of the paper could discuss how the audience received President Lincoln's famous speech. The topic sentence for this paragraph could be, "With the brief yet poignant nature of the Gettysburg Address, President Lincoln reminded his audience why the country was fighting so desperately to conserve the Union."

3 Thesis Statement

A thesis statement is a single sentence that is used to define the purpose of your paper. Thesis statements inform readers as to the purpose of your paper. After reading your thesis statement, anyone reviewing your paper should be able to determine what your paper is going to prove or argue. For example, a thesis statement for a paper about William Shakespeare's famous play "Romeo and Juliet" could be as follows: "The play 'Romeo and Juliet' demonstrates the incredible power and impatient nature of young love, as the star-crossed lovers' inability to exercise patience or control their passion for one another results in their deaths."

4 Differences

With the purposes of both topic sentences and thesis statements established, the differences between the two are clear. Thesis statements need to be more broad and leave room to expand on further points to support the paper's argument. With the thesis statement in the previous section, a writer could continue explaining his argument about Romeo and Juliet by providing sub-points, demonstrating instances where the pair made hasty choices that had fatal consequences. Topic sentences are more specific in their purpose. For example, with the topic sentence in section two, it is clear that the next paragraph will discuss how President Lincoln used the Gettysburg Address to remind his countrymen about the purpose of the Civil War.

• 1 Indiana University: Paragraphs and Topic Sentences

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• How to Write Topic Sentences | 4 Steps, Examples & Purpose

How to Write Topic Sentences | 4 Steps, Examples & Purpose

Published on July 21, 2022 by Shona McCombes . Revised on June 5, 2023.

Every paragraph in your paper needs a topic sentence . The topic sentence expresses what the paragraph is about. It should include two key things:

• The  topic of the paragraph
• The central point of the paragraph.

After the topic sentence, you expand on the point zwith evidence and examples.

To build a well-structured argument, you can also use your topic sentences to transition smoothly between paragraphs and show the connections between your points.

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Table of contents

Writing strong topic sentences, topic sentences as transitions between paragraphs, topic sentences that introduce more than one paragraph, where does the topic sentence go, frequently asked questions about topic sentences.

Topic sentences aren’t the first or the last thing you write—you’ll develop them throughout the writing process. To make sure every topic sentence and paragraph serves your argument, follow these steps.

Step 1: Write a thesis statement

The first step to developing your topic sentences is to make sure you have a strong thesis statement . The thesis statement sums up the purpose and argument of the whole paper.

Thesis statement example

Food is an increasingly urgent environmental issue, and to reduce humans’ impact on the planet, it is necessary to change global patterns of food production and consumption.

Step 2: Make an essay outline and draft topic sentences

Next, you should make an outline of your essay’s structure , planning what you want to say in each paragraph and what evidence you’ll use.

At this stage, you can draft a topic sentence that sums up the main point you want to make in each paragraph. The topic sentences should be more specific than the thesis statement, but always clearly related to it.

Topic sentence example

Research has consistently shown that the meat industry has a significant environmental impact .

Step 3: Expand with evidence

The rest of the paragraph should flow logically from the topic sentence, expanding on the point with evidence, examples, or argumentation. This helps keep your paragraphs focused: everything you write should relate to the central idea expressed in the topic sentence.

In our example, you might mention specific research studies and statistics that support your point about the overall impact of the meat industry.

Step 4: Refine your topic sentences

Topic sentences usually start out as simple statements. But it’s important to revise them as you write, making sure they match the content of each paragraph.

A good topic sentence is specific enough to give a clear sense of what to expect from the paragraph, but general enough that it doesn’t give everything away. You can think of it like a signpost: it should tell the reader which direction your argument is going in.

To make your writing stronger and ensure the connections between your paragraphs are clear and logical, you can also use topic sentences to create smooth transitions. To improve sentence flow even more, you can also utilize the paraphrase tool .

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As you write each topic sentence, ask yourself: how does this point relate to what you wrote in the preceding paragraph? It’s often helpful to use transition words in your topic sentences to show the connections between your ideas.

Emphasize and expand

If the paragraph goes into more detail or gives another example to make the same point, the topic sentence can use words that imply emphasis or similarity (for example, furthermore , indeed , in fact , also ).

Indeed , cattle farming alone is responsible for a large proportion of greenhouse gas emissions.

Summarize and anticipate

If the paragraph turns to a different aspect of the same subject, the topic sentence can briefly sum up the previous paragraph and anticipate the new information that will appear in this one.

While beef clearly has the most dramatic footprint, other animal products also have serious impacts in terms of emissions, water and land use.

Compare and contrast

If the paragraph makes a comparison or introduces contrasting information, the topic sentence can use words that highlight difference or conflict (for example, in contrast , however , yet , on the other hand ).

However , the environmental costs of dietary choices are not always clear-cut; in some cases, small-scale livestock farming is more sustainable than plant-based food production.

You can also imply contrast or complicate your argument by formulating the topic sentence as a question.

Is veganism the only solution, or are there more sustainable ways of producing meat and dairy?

Sometimes you can use a topic sentence to introduce several paragraphs at once.

All of the examples above address the environmental impact of meat-eating versus veganism. Together, they make up one coherent part of a larger argument, so the first paragraph could use a topic sentence to introduce the whole section.

In countries with high levels of meat consumption, a move towards plant-based diets is the most obvious route to making food more sustainable. Research has consistently shown that the meat industry has significant environmental impacts.

The topic sentence usually goes at the very start of a paragraph, but sometimes it can come later to indicate a change of direction in the paragraph’s argument.

Given this evidence of the meat industry’s impact on the planet, veganism seems like the only environmentally responsible option for consumers. However, the environmental costs of dietary choices are not always clear-cut; in some cases, small-scale livestock farming is more sustainable than plant-based food production.

In this example, the first sentence summarizes the main point that has been made so far. Then the topic sentence indicates that this paragraph will address evidence that complicates or contradicts that point.

In more advanced or creative forms of academic writing , you can play with the placement of topic sentences to build suspense and give your arguments more force. But if in doubt, to keep your research paper clear and focused, the easiest method is to place the topic sentence at the start of the paragraph.

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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.

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.

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.

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.

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Thesis Statements

A thesis statement defines the scope and purpose of the paper. It needs to meet three criteria: 1. It must be arguable rather than a statement of fact. It should also say something original about the topic.     Bad thesis: Lily Bart experiences the constraints of many social conventions in The House of Mirth . [Of course she does. What does she do with these social conventions, and how does she respond to them? What's your argument about this idea?]     Better thesis: Lily Bart seeks to escape from the social conventions of her class in The House of Mirth , but her competing desires for a place in Selden's "republic of the spirit" and in the social world of New York cause her to gamble away her chances for a place in either world. [You could then mention the specific scenes that you will discuss.] 2. It must be limited enough so that the paper develops in some depth.     Bad thesis: Lily Bart and Clare Kendry are alike in some ways, but different in many others. [What ways?]     Better thesis: Lily Bart and Clare Kendry share a desire to "pass" in their respective social worlds, but their need to take risks and to reject those worlds leads to their destruction. 3. It must be unified so that the paper does not stray from the topic.     Bad thesis: Lily Bart gambles with her future, and Lawrence Selden is only a spectator rather than a hero of The House of Mirth . [Note: This is really the beginning of two different thesis statements.]     Better thesis: In The House of Mirth, Lawrence Selden is a spectator who prefers to watch and judge Lily than to help her. By failing to assist her on three separate occasions, he is revealed as less a hero of the novel than as the man responsible for Lily's downfall. [Note: Sometimes thesis statements are more than one sentence long.] 4. Statements such as "In this essay I will discuss " or "I will compare two stories in this paper" or "I was interested in Marji's relationship with God, so I thought I would talk about it in this essay" are not thesis statements and are unnecessary, since mentioning the stories in the introduction already tells the reader this. Topic Sentences Good topic sentences can improve an essay's readability and organization. They usually meet the following criteria: 1. First sentence. A topic sentence is usually the first sentence of the paragraph, not the last sentence of the previous paragraph. 2. Link to thesis . Topic sentences use keywords or phrases from the thesis to indicate which part of the thesis will be discussed. 3. Introduce the subject of the paragraph. They tell the reader what concept will be discussed and provide an introduction to the paragraph. 4. Link to the previous paragraph. They link the subject of the present paragraph to that of the previous paragraph. 5. Indicate the progression of the essay. Topic sentences may also signal to the reader where the essay has been and where it is headed through signposting words such as "first," "second," or "finally." Good topic sentences typically DON'T begin with the following. 1. A quotation from a critic or from the piece of fiction you're discussing. The topic sentence should relate to your points and tell the reader what the subject of the paragraph will be. Beginning the paragraph with someone else's words doesn't allow you to provide this information for the reader. 2. A piece of information that tells the reader something more about the plot of the story. When you're writing about a piece of literature, it's easy to fall into the habit of telling the plot of the story and then adding a sentence of analysis, but such an approach leaves the reader wondering what the point of the paragraph is supposed to be; it also doesn't leave you sufficient room to analyze the story fully. These "narrative" topic sentences don't provide enough information about your analysis and the points you're making.

Weak "narrative" topic sentence: Lily Bart next travels to Bellomont, where she meets Lawrence Selden again. Stronger "topic-based" topic sentence: A second example of Lily's gambling on her marriage chances occurs at Bellomont, where she ignores Percy Gryce in favor of Selden. [Note that this tells your reader that it's the second paragraph in a series of paragraph relating to the thesis, which in this case would be a thesis related to Lily's gambling on her marriage chances.]

3. A sentence that explains your response or reaction to the work, or that describes why you're talking about a particular part of it, rather than why the paragraph is important to your analysis. 

Weak "reaction" topic sentence: I felt that Lily should have known that Bertha Dorset was her enemy. Stronger "topic-based" topic sentence: Bertha Dorset is first established as Lily's antagonist in the train scene, when she interrupts Lily's conversation with Percy Gryce and reveals that Lily smokes.

Thesis Statements and Topic Sentences

Learning objectives.

• Identify strategies for using thesis statements to predict content of texts

We’ve learned that a thesis statement conveys the primary message of an entire piece of text.  Now, let’s look at the next level of important sentences in a piece of text: topic sentences in each paragraph.

A useful metaphor would be to think of the thesis statement of a text as a general: it controls all the major decisions of the writing.  There is only one thesis statement in a text.  Topic sentences, in this relationship, serve as captains: they organize and sub-divide the overall goals of a writing into individual components.  Each paragraph will have a topic sentence.

It might be helpful to think of a topic sentence as working in two directions simultaneously. It relates the paragraph to the essay’s thesis, and thereby acts as a signpost for the argument of the paper as a whole, but it also defines the scope of the paragraph itself. For example, consider the following topic sentence:

Many characters in Lorraine Hansberry’s play  A Raisin in the Sun have one particular dream in which they are following, though the character Walter pursues his most aggressively.

If this sentence controls the paragraph that follows, then all sentences in the paragraph must relate in some way to Walter and the pursuit of his dream.

Topic sentences often act like tiny thesis statements. Like a thesis statement, a topic sentence makes a claim of some sort. As the thesis statement is the unifying force in the essay, so the topic sentence must be the unifying force in the paragraph. Further, as is the case with the thesis statement, when the topic sentence makes a claim, the paragraph which follows must expand, describe, or prove it in some way. Topic sentences make a point and give reasons or examples to support it.

The topic sentence is often, though not always, the first sentence of a paragraph.

• Revision and Adaptation. Provided by : Lumen Learning. License : CC BY-SA: Attribution-ShareAlike
• Topic Sentences. Authored by : Ms. Beardslee. Located at : http://msbeardslee.wikispaces.com/Topic+Sentences?showComments=1 . License : CC BY-SA: Attribution-ShareAlike
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5.2: Identifying Thesis Statements and Topic Sentences

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Being able to identify the purpose and thesis of a text, as you’re reading it, takes practice. This section will offer you that practice.

One fun strategy for developing a deeper understanding the material you’re reading is to make a visual “map” of the ideas. Mind maps, whether hand-drawn or done through computer programs, can be fun to make, and help put all the ideas of an essay you’re reading in one easy-to-read format.

Your understanding of what the “central” element of the mind map is might change as you read and re-read. Developing the central idea of your mind map is a great way to help you determine the reading’s thesis.

Figure 2.5. 1

- Hand-drawn Mind Map

Locating Explicit and Implicit Thesis Statements

In academic writing, the thesis is often explicit : it is included as a sentence as part of the text. It might be near the beginning of the work, but not always–some types of academic writing leave the thesis until the conclusion.

Journalism and reporting also rely on explicit thesis statements that appear very early in the piece–the first paragraph or even the first sentence.

Works of literature, on the other hand, usually do not contain a specific sentence that sums up the core concept of the writing. However, readers should finish the piece with a good understanding of what the work was trying to convey. This is what’s called an implicit thesis statement: the primary point of the reading is conveyed indirectly, in multiple locations throughout the work. (In literature, this is also referred to as the theme of the work.)

Academic writing sometimes relies on implicit thesis statements, as well.

This video offers excellent guidance in identifying the thesis statement of a work, no matter if it’s explicit or implicit.

Topic Sentences

We’ve learned that a thesis statement conveys the primary message of an entire piece of text. Now, let’s look at the next level of important sentences in a piece of text: topic sentences in each paragraph.

A useful metaphor would be to think of the thesis statement of a text as a general: it controls all the major decisions of the writing. There is only one thesis statement in a text. Topic sentences, in this relationship, serve as captains: they organize and sub-divide the overall goals of a writing into individual components. Each paragraph will have a topic sentence.

Figure 2.5. 2

It might be helpful to think of a topic sentence as working in two directions simultaneously. It relates the paragraph to the essay’s thesis, and thereby acts as a signpost for the argument of the paper as a whole, but it also defines the scope of the paragraph itself. For example, consider the following topic sentence:

Many characters in Lorraine Hansberry’s play A Raisin in the Sun have one particular dream in which they are following, though the character Walter pursues his most aggressively.

If this sentence controls the paragraph that follows, then all sentences in the paragraph must relate in some way to Walter and the pursuit of his dream.

Topic sentences often act like tiny thesis statements. Like a thesis statement, a topic sentence makes a claim of some sort. As the thesis statement is the unifying force in the essay, so the topic sentence must be the unifying force in the paragraph. Further, as is the case with the thesis statement, when the topic sentence makes a claim, the paragraph which follows must expand, describe, or prove it in some way. Topic sentences make a point and give reasons or examples to support it.

 The following diagram illustrates how a topic sentence can provide more focus to the general topic at hand.

Placement of Topic Sentences

What if I told you that the topic sentence doesn’t necessarily need to be at the beginning? This might be contrary to what you’ve learned in previous English or writing classes, and that’s okay. Certainly, when authors announce a topic clearly and early on in a paragraph, their readers are likely to grasp their idea and to make the connections that they want them to make.

However, when authors are writing for a more sophisticated academic audience—that is an audience of college-educated readers—they will often use more sophisticated organizational strategies to build and reveal ideas in their writing. One way to think about a topic sentence, is that it presents the broadest view of what authors want their readers to understand. This is to say that they’re providing a broad statement that either announces or brings into focus the purpose or the meaning for the details of the paragraph. If the topic sentence is seen as the broadest view, then every supporting detail will bring a narrower—or more specific—view of the same topic.

With this in mind, take some time to contemplate the diagrams in the figure below. The widest point of each diagram (the bases of the triangles) represents the topic sentence of the paragraph. As details are presented, the topic becomes narrower and more focused. The topic can precede the details, it can follow them, it can both precede and follow them, or the details can surround the topic. There are surely more alternatives than those that are presented here, but this gives you an idea of some of the possible paragraph structures and possible placements for the topic sentence of a paragraph.

Consider some of the following examples of different topic sentence placements in a paragraph from a review essay of the beloved children’s book, The Cat in the Hat , by Dr. Seuss. Paragraph structures are labeled according to the diagrams presented above, and topic sentences are identified by red text.

Topic Sentence-Details-Topic Sentence

A good children’s book requires an exciting plot and a problem with which children can sympathize. In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. There is also tension to be resolved. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval. The careful balance of action, tension, and relatability is what makes this book an enduring childhood favorite.

Topic Sentence-Details

The careful balance of action, tension, and relatability is what makes Dr. Seuss’s The Cat in the Hat an enduring childhood favorite. In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. There is also tension to be resolved. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval.

You can relocate the topic sentence to the end here, and you’ll have an example of the Details-Topic Sentence method of organizing the paragraph.

Details-Topic Sentence-Details

In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. The careful balance of action, tension, and relatability is what makes Dr. Seuss’s The Cat in the Hat an enduring childhood favorite. There is definitely tension to be resolved here. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval.

Explicit and Implicit Topic Sentences

Similar to thesis statements, topic sentences may be explicit or implicit.

Consider the following paragraph from an essay titled “The Bothersome Beauty of Pigeons,” by author and Boise State writing professor, Bruce Ballenger. It’s important to note that this is a personal narrative essay rather than a more traditional academic essay, but the paragraph provides a good example of an implied topic. In this essay Ballenger takes the time to consider the beauty of pigeons, a bird that’s usually thought of as nothing more than a nuisance. Just prior to this paragraph, Ballenger talks about how he used a fake owl to scare away pigeons on his property. He goes on to explain,

My pigeons moved next door where an elderly couple feed them bird seed and have the time and willingness to clean up after their new charges; so it seems, in this case, things have worked out for everyone. But the large flocks still haunt the piazzas in Florence and Venice, the squares in London, and similar places in nearly every city across the globe. Despite their ability to distinguish between a Van Gogh and a Chagall, pigeons still deposit droppings that deface the great marble statues and facades–the works of art and architecture that are part of our human heritage–and yet people still buy bags of seed for about a dollar and pose for photographs, drenched in doves. Meanwhile, officials in these cities continue, sometimes quietly, to wage war against the birds (“Introduction”).

Here, Ballenger seems to be saying that in spite of the attempts of so many to rid themselves of the pigeons, others are still drawn to them and will feed them and encourage them to come back. His main idea seems to be that the battle against pigeons is a losing proposition, but he doesn’t come out and say so. His message in this paragraph is implied. Do you think this paragraph would be improved with an explicit topic sentence?

EXERCISE 1: Identify the Topic and Focus

Choose a piece of writing, perhaps an essay or some news articles found online, and for each paragraph identify (1) the topic and (2) the more focused idea. Remember, the topic sentence applies more focus to the broader topic to help narrow the scope of the paragraph. For example, the topic of a paragraph might be school lunches. The more focused idea of that same paragraph might be the idea of having students plant school gardens as a way to help incorporate more fresh produce in the menu.

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Topic sentences and signposts make an essay's claims clear to a reader. Good essays contain both.  Topic sentences   reveal the main point of a paragraph. They show the relationship of each paragraph to the essay's thesis, telegraph the point of a paragraph, and tell your reader what to expect in the paragraph that follows. Topic sentences also establish their relevance right away, making clear why the points they're making are important to the essay's main ideas. They argue rather than report.  Signposts , as their name suggests, prepare the reader for a change in the argument's direction. They show how far the essay's argument has progressed vis-ˆ-vis the claims of the thesis. 

Topic sentences and signposts occupy a middle ground in the writing process. They are neither the first thing a writer needs to address (thesis and the broad strokes of an essay's structure are); nor are they the last (that's when you attend to sentence-level editing and polishing). Topic sentences and signposts deliver an essay's structure and meaning to a reader, so they are useful diagnostic tools to the writer—they let you know if your thesis is arguable—and essential guides to the reader

Forms of Topic Sentences

 Sometimes topic sentences are actually two or even three sentences long. If the first makes a claim, the second might reflect on that claim, explaining it further. Think of these sentences as asking and answering two critical questions: How does the phenomenon you're discussing operate? Why does it operate as it does?

There's no set formula for writing a topic sentence. Rather, you should work to vary the form your topic sentences take. Repeated too often, any method grows wearisome. Here are a few approaches.

Complex sentences.   Topic sentences at the beginning of a paragraph frequently combine with a transition from the previous paragraph. This might be done by writing a sentence that contains both subordinate and independent clauses, as in the example below.

 Although  Young Woman with a Water Pitcher  depicts an unknown, middle-class woman at an ordinary task, the image is more than "realistic"; the painter [Vermeer] has imposed his own order upon it to strengthen it. 

This sentence employs a useful principle of transitions: always move from old to new information.  The subordinate clause (from "although" to "task") recaps information from previous paragraphs; the independent clauses (starting with "the image" and "the painter") introduce the new information—a claim about how the image works ("more than Ôrealistic'") and why it works as it does (Vermeer "strengthens" the image by "imposing order"). 

Questions.   Questions, sometimes in pairs, also make good topic sentences (and signposts).  Consider the following: "Does the promise of stability justify this unchanging hierarchy?" We may fairly assume that the paragraph or section that follows will answer the question. Questions are by definition a form of inquiry, and thus demand an answer. Good essays strive for this forward momentum.

Bridge sentences.   Like questions, "bridge sentences" (the term is John Trimble's) make an excellent substitute for more formal topic sentences. Bridge sentences indicate both what came before and what comes next (they "bridge" paragraphs) without the formal trappings of multiple clauses: "But there is a clue to this puzzle." 

Pivots.   Topic sentences don't always appear at the beginning of a paragraph. When they come in the middle, they indicate that the paragraph will change direction, or "pivot." This strategy is particularly useful for dealing with counter-evidence: a paragraph starts out conceding a point or stating a fact ("Psychologist Sharon Hymer uses the term Ônarcissistic friendship' to describe the early stage of a friendship like the one between Celie and Shug"); after following up on this initial statement with evidence, it then reverses direction and establishes a claim ("Yet ... this narcissistic stage of Celie and Shug's relationship is merely a transitory one. Hymer herself concedes . . . "). The pivot always needs a signal, a word like "but," "yet," or "however," or a longer phrase or sentence that indicates an about-face. It often needs more than one sentence to make its point.

Signposts operate as topic sentences for whole sections in an essay. (In longer essays, sections often contain more than a single paragraph.) They inform a reader that the essay is taking a turn in its argument: delving into a related topic such as a counter-argument, stepping up its claims with a complication, or pausing to give essential historical or scholarly background. Because they reveal the architecture of the essay itself, signposts remind readers of what the essay's stakes are: what it's about, and why it's being written. 

Signposting can be accomplished in a sentence or two at the beginning of a paragraph or in whole paragraphs that serve as transitions between one part of the argument and the next. The following example comes from an essay examining how a painting by Monet,  The Gare Saint-Lazare: Arrival of a Train,  challenges Zola's declarations about Impressionist art. The student writer wonders whether Monet's Impressionism is really as devoted to avoiding "ideas" in favor of direct sense impressions as Zola's claims would seem to suggest. This is the start of the essay's third section:

It is evident in this painting that Monet found his Gare Saint-Lazare motif fascinating at the most fundamental level of the play of light as well as the loftiest level of social relevance.  Arrival of a Train  explores both extremes of expression. At the fundamental extreme, Monet satisfies the Impressionist objective of capturing the full-spectrum effects of light on a scene.

 The writer signposts this section in the first sentence, reminding readers of the stakes of the essay itself with the simultaneous references to sense impression ("play of light") and intellectual content ("social relevance"). The second sentence follows up on this idea, while the third serves as a topic sentence for the paragraph. The paragraph after that starts off with a topic sentence about the "cultural message" of the painting, something that the signposting sentence predicts by not only reminding readers of the essay's stakes but also, and quite clearly, indicating what the section itself will contain. 

Copyright 2000, Elizabeth Abrams, for the Writing Center at Harvard University

Thesis Statement or Topic Sentence?

• High School

Occasionally at IEW our customer service team will receive questions about the differences between topic sentences and thesis statements. Hopefully this blog post will dispel any confusion between the two and empower you to help your students assail the essay in style!

Thesis statements summarize the central position of an entire essay and typically appear at the end of the introductory paragraph. Think of them as guideposts for the entire essay. They provide the reader of the essay an idea of the direction it will take. While beginning essay writers will typically write a single-sentence thesis statement, the thesis can be more than one sentence.

Depending upon the type of essay being written, a thesis statement’s emphasis will vary. In an expository essay, an essay that explains or informs, the thesis will narrow what is being explained. Thesis statements in narrative essays, which are essays that relate a story, paint an overall picture of the story that is being described and as such tend to be more personal in nature. Another type of essay, the argumentative essay, features thesis statements that underscore the writer’s opinion. In contrast, persuasive essays employ a somewhat different approach. In a persuasive essay, the thesis statement is oftentimes replaced with a question. This question serves to entice the reader to continue reading the essay in order to learn the writer’s position.

While you can think of thesis statements as guideposts for an entire essay, think of topic sentences as guideposts for individual paragraphs. Topic sentences appear in the body of the essay and are the first sentence in the paragraph. Not only do topic sentences focus the content in the paragraph, they also support the thesis statement made in the introduction.

So what might thesis statements and topic sentences look in a real-life example? Let’s consider a narrative essay prompt that asks the writer to describe someone who challenged him or her to work hard. A thesis statement might look something like this: “My gym teacher, Mr. Hernandez, never stopped encouraging me to do ‘hard things’ in high school.” This thesis statement helps the reader prepare to read some of the ways that Mr. Hernandez encouraged the writer. The topic sentences would support the thesis. Consider the following potential topic sentences:

• Mr. Hernandez encouraged me to enroll in an honors English class my senior year in high school.
• When he learned of an opportunity to help a family who had fallen on hard times, Mr. Hernandez reached out to me to help organize a clothing drive.
• Once I began to apply to colleges, Mr. Hernandez encouraged me to apply to a selective college and even offered to write a reference letter on my behalf.

These topic sentences all support the thesis of the paper by showing how Mr. Hernandez supported the writer of the essay. In the conclusion of the essay, the writer would reiterate the topics one more time before finishing the paper by emphasizing the most important point that underscores the thesis. That point might be something like this:

Mr. Hernandez saw something in me that I didn’t recognize in myself. He helped me to grow in confidence and take on challenges I would never have considered on my own. I’m excited to say that this next fall I’ll be attending ____________ University as an honors student majoring in English. And I even received an academic scholarship thanks in part to his letter of recommendation. I am so thankful he took the time to help me on my path!

Difference Between Thesis Statement and Topic Sentence

A perfect data arrangement, catchy hook, compelling content, and excellent formatting are the basic requirements for any academic paper. However, these are not all the structural parts that may influence the quality of the text.

Although the magnitude of the thesis statement and topic sentence are frequently underestimated, these are the items that can either contribute to the relevance of the paper or affect the final result. 

No matter if you are an experienced writer or a complete amateur, you should pay due attention to these items. At this point, it is essential to mention that the vast majority of learners are unaware of key peculiarities and specifications on these essay parts, considering them to be interchangeable. 

So, what is the difference between a topic sentence and a thesis statement? This is a prominent question you should ask before you start creating any college-level text. Remember that the key objective of both items is to draw the reader’s attention to the core idea of the text. Nonetheless, the thesis statement emphasizes the key specks of the whole paper, while the topic sentence is used to reveal the quirks of a particular paragraph. 

Basic Definitions: Thesis Statement and Topic Sentence in Detail

While the general idea behind these two definitions is clear from the previous point, it is essential to dive deeper into the characteristics of the items to use them more efficiently. 

The thesis statement is the fundamental stand the writer takes. It incorporated the generalized idea of the essay, including the author’s perspective of the topic and the key points included in the text. Striving to make this part influential, the learner should fixate on the topic, limit it, and narrow it down, presenting only the most significant and appealing info. The scope of this essay part will depend mainly on the length, goal of the writing, and the prospective audience. 

As for the topic sentence, it resembles the thesis but has a much narrower meaning. As the name implies, it introduced the principal theme but is restricted to a particular passage. As you read the topic sentence, you will get detailed info about the essence of the passage, its objectives, and conclusions. Here are the prime specifications of the topic sentence:

• it contains the dominating idea of the passage;
• it is short and concise, but informative and influential;
• it is presented as a first sentence in the paragraph;
• it is descriptive and argumentative;
• it is a declarative sentence that contains relevant and valid information only. 

Core Similarities of the Paper Parts

Before you deal with the critical discrepancies of the topic sentence and thesis statement, you should pay due attention to their similarities. It will help you succeed with academic essay writing and achieve the desired goal. Look through the list of core features that make these items alike:

• they are full sentences that communicate a coherent idea;
• they should show and describe the content;
• they should be neither too broad nor too narrow. 

Thesis Statement vs Topic Sentence: Discrepancy to Mind

When the definitions, specifications, and objectives of the thesis statement and topic sentence are acknowledged, the dissimilarities between these items become obvious. However, if you have failed to grasp the core idea, you have another chance to discover the three peculiarities that make the items different. First of all, it is critical to mention the position, information, and function that can make a significant difference. 

All these points should mandatorily be taken into consideration if the learner strives to make the essay highly appreciated. Double-check your awareness of the sentence place and essence, which may become critical for the success of your work.  

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