What openings and closings must accomplish, how to build them effectively, and how to revise them when they fail
Every essay has a beginning and an end. This sounds obvious, but what those two positions actually require is something most writers underestimate. The introduction and the conclusion are not decoration. They are not formalities to be dispatched quickly so that the "real" writing can begin or end. They are functional parts of the essay, each with specific work to do, and when either one fails, the entire essay suffers.
This chapter explains what introductions and conclusions are supposed to accomplish, how to build them effectively, and what mistakes to avoid. It also confronts some of the most common habits that weaken these two critical sections of academic writing: the empty hook, the vague opening that delays the essay's real subject, the mechanical conclusion that merely lists what the essay already said, and the final paragraph that trails off without giving the reader any sense of completion or meaning.
By the end of this chapter, you should be able to write introductions that genuinely prepare readers for what is coming and conclusions that genuinely complete the essay's work. You will also understand why these skills matter not just for English class but for every academic course that asks you to write.
Think about the last essay you submitted. Did your introduction actually prepare your reader for what followed — or did it delay the real subject? Did your conclusion genuinely complete the argument — or did it merely list what you had already said? Most writers, even experienced ones, struggle with these two endpoints. This chapter explains why they are difficult and how to get them right.
When a reader picks up an essay, the first paragraph makes several silent promises. It suggests what the essay is about. It establishes the writer's tone and level of seriousness. It signals how the writer thinks about the subject. And, in academic writing, it leads to a thesis statement that tells the reader what the essay will argue, analyze, or explain.
An introduction that fulfills all of these responsibilities is doing real work. An introduction that merely takes up space at the beginning of the page is failing the reader and weakening the essay before it has really begun.
It helps to think about the introduction from the reader's perspective. When you begin reading a new essay, you bring questions with you. You want to know: What is this about? Why does it matter? What is the writer's position or focus? What should I be paying attention to as I read? A strong introduction answers all of these questions before the body of the essay begins. A weak introduction leaves the reader uncertain, confused, or worse, uninterested.
Academic readers — professors, instructors, writing center tutors, and educated peers — are experienced readers. They have read many essays, good and bad. They notice almost immediately whether a writer is in control of the material or struggling to find a way in. An introduction that delays the topic, makes empty gestures toward importance, or arrives at a vague thesis tells an experienced reader something unflattering about the draft. On the other hand, an introduction that establishes context efficiently and leads to a clear, focused thesis creates confidence. It tells the reader: this writer knows what the essay is doing.
An effective academic introduction performs three distinct functions, and it performs them in roughly this order.
First: Establish context. The reader needs to know what territory the essay is entering. This means providing some background, framing the topic, or identifying the question or problem the essay will address. The context should be relevant and proportionate — enough to orient the reader, not so much that the introduction becomes its own essay.
Second: Narrow toward the specific focus. A well-constructed introduction does not stay in broad territory. It moves from general context toward the specific subject of the essay. This movement gives the reader a sense of direction. Each sentence or group of sentences brings the reader closer to the thesis.
Third: State the thesis. The thesis is the central claim, argument, or controlling idea of the essay. In most academic essays, the thesis appears at or near the end of the introduction. It is the destination that the introduction has been preparing the reader to reach.
These three functions work together. Context without narrowing leaves the reader floating. Narrowing without context feels abrupt. A thesis without context feels unexplained and unsupported before it has even been developed. When all three work together, the introduction feels logical, purposeful, and readable.
Think of the introduction as a funnel. The wide opening represents the broader context. As the funnel narrows, the introduction moves toward the specific topic and problem. The narrow end — the point at which everything exits — is the thesis. The reader should feel pulled through this funnel, not dropped into it.
The opening sentences of an introduction are among the most important sentences in the entire essay. They set the tone, establish the subject, and either earn or lose the reader's attention. Many students waste this opportunity by writing sentences that are too broad, too vague, or too disconnected from the actual essay.
Context means giving the reader enough background to understand why the topic matters and what problem or question the essay will address. The right amount of context depends on the assignment, the topic, and the audience. A short in-class essay may need only a sentence or two of background. A longer research essay may need several sentences or even a full paragraph of context before the narrowing begins.
The key principle is that context should be relevant. Every sentence in the introduction should be pulling the reader toward the thesis. If a sentence does not contribute to that movement, it probably does not belong in the introduction.
Good context grounds the reader in the topic quickly and meaningfully. Consider an essay analyzing the causes of the Great Fire of London in 1666. A useful contextual opening might identify the historical period, the city's conditions, and the significance of the fire as an event worth examining. This gives the reader orientation without telling the entire story before the essay has begun.
| Strategy | Description | Useful For |
|---|---|---|
| Name the problem or question | State directly what issue the essay will address | Analytical and research essays |
| Identify a tension or contradiction | Present two things that conflict or a belief that evidence complicates | Argumentative and analytical essays |
| Provide relevant background | Give the reader the historical, scientific, or cultural context needed to understand the topic | Research essays, historical analysis |
| Identify the subject of analysis | Name the text, event, policy, or phenomenon the essay will examine | Literary analysis, policy essays |
| Describe a situation | Sketch a recognizable scenario that raises the essay's central question | Social science, education, policy writing |
All of these strategies have something in common: they help the reader understand what the essay is for. Context is not decoration. It is preparation.
Many student introductions begin with context that is too broad, too vague, or too disconnected from the actual argument. The most common version of this error is the "since the beginning of time" opening, where the writer begins at the broadest possible level before trying to work down toward the topic.
Throughout human history, people have faced many challenges. Society has always struggled with difficult problems. One of the most important issues today is climate change.
Over the past three decades, the scientific consensus on human-caused climate change has strengthened considerably. Yet public debate about climate policy remains divided, often along political and economic lines. This essay examines why the gap between scientific evidence and public policy has persisted, and what role misinformation has played in widening that gap.
The weak version fails on several levels. The first two sentences say almost nothing — every essay could open that way. The third sentence finally names the topic but arrives without useful preparation. The effective version uses its sentences efficiently: the first sentence establishes existing consensus, the second identifies the tension, and the third narrows to the specific focus. The reader knows where the essay is going before the thesis has even been fully stated.
Resist the urge to open with statements like "Since the beginning of time," "Throughout human history," or "In today's modern world." These phrases say nothing specific and signal to experienced readers that the writer is stalling. Begin with something that belongs specifically to your topic.
Many academic essays are not just about a topic — they are about a problem, question, debate, or gap in understanding related to that topic. The difference matters. A topic is a subject area. A problem or question is what makes the essay worth writing.
Think about the distinction this way. "Urban transportation" is a topic. "Why public transit ridership has declined in mid-sized American cities despite increased investment" is a problem. An essay about the topic might wander through a variety of observations. An essay about the problem has direction, purpose, and something to argue or explain.
Introducing the problem — not just the topic — is one of the most important things an introduction can do. When a reader understands the problem the essay is addressing, they understand why the essay exists. They read with a purpose: they want to see how the writer addresses the problem.
Whatever strategy you use, the goal is the same: give the reader a reason to keep reading. When you finish your introduction, ask yourself honestly: Does a reader who finishes this paragraph want to see what comes next? If the answer is no, the problem has not been introduced effectively.
The thesis statement is the most important sentence in most academic essays. It states the main claim, argument, or controlling idea. It tells the reader what the essay will demonstrate, analyze, or argue. And in most academic introductions, it appears at or near the end of the introductory paragraph or section.
The introduction's job is to lead the reader to the thesis. Every sentence in the introduction should be building toward the moment when the thesis arrives. When this works well, the thesis feels like the natural destination of the introduction — almost inevitable. The reader finishes the introduction thinking: yes, that is exactly the question this essay should be asking, or yes, I can see why that is the argument.
When the introduction does not do this work, the thesis arrives like an interruption. The reader has been moving in one direction, and the thesis pulls them somewhere else. This disconnect is a sign that the introduction needs revision.
In most college-level academic essays, the thesis appears at or near the end of the introduction. This placement is conventional for good reasons. It allows the writer to establish context before stating the claim. It allows the reader to understand the territory before being told where the essay is going to stand within that territory.
However, the thesis does not always need to be the absolute last sentence of the introduction. In some essays, the thesis is followed by a brief sentence that indicates the structure or main points of the essay — sometimes called a "roadmap" sentence. A roadmap sentence can be useful in longer essays where the structure is complex. In shorter essays, it is often unnecessary and can feel mechanical.
What matters most is not whether the thesis is the last sentence or the second-to-last sentence. What matters is that the thesis is positioned at the end of the introduction's movement — after context has been established and the topic has been narrowed — and that it says something clear and specific.
This essay is about social media and mental health in teenagers.
While social media platforms offer genuine opportunities for connection among teenagers, research suggests that heavy daily use correlates with increased rates of anxiety and depression, particularly among adolescent girls.
The weak version merely announces a topic. The stronger version makes a specific, arguable claim. A reader who finishes the stronger introduction knows exactly what the essay will argue and is ready to evaluate the evidence that follows.
Thesis statements that begin with "This essay will discuss..." or "In this paper I will examine..." are mechanical and flat. They tell the reader what the writer will do, but they do not make a claim. Replace announcements with arguments. Instead of "This essay will discuss the effects of social media," try "Social media use among teenagers is reshaping how young people experience both connection and loneliness."
If the introduction's job is to prepare the reader for what is coming, the conclusion's job is to complete what the essay has done. The conclusion is not a summary. It is not a list of what the essay already said. It is not a place to introduce entirely new arguments. It is the place where the essay arrives.
Think of an essay as a journey. The introduction tells the reader where the journey is going. The body paragraphs carry the reader through the terrain. The conclusion tells the reader what the journey meant. This is why conclusions that simply repeat the thesis and list the main points feel so unsatisfying — they tell the reader where they started, not where they arrived.
A strong conclusion does several things. It returns to the central argument and shows how the essay has developed or enriched that argument. It synthesizes — meaning it brings together the threads of the essay and shows how they connect. It suggests the implications or significance of the argument. And it gives the reader a sense of completion: the feeling that the essay has done what it set out to do.
The distinction between summary and synthesis is one of the most important concepts in this chapter. Understanding this distinction will change how you write every conclusion going forward.
Before writing your conclusion, ask yourself: What do all of these arguments, examples, and pieces of evidence add up to? What should the reader understand now that they could not have understood at the beginning? Your answer to these questions is the foundation of your synthesis.
Synthesis is the intellectual heart of a strong conclusion. To synthesize means to combine separate things into a unified whole. In an academic essay, synthesis means showing how the essay's individual arguments, pieces of evidence, and analytical moves add up to something larger and more meaningful than any single part.
This is not as difficult as it might sound, but it does require a shift in thinking. When you have finished writing the body of an essay, you have assembled a collection of ideas, evidence, and arguments. The conclusion's job is to step back from that collection and ask: What does all of this mean? What does it add up to? What should the reader walk away understanding?
| Strategy | How It Works | What It Adds |
|---|---|---|
| Return to the thesis with greater depth | Restate the thesis, but now with the full weight of the body's evidence behind it. This is not repetition — it is the thesis enriched. | Shows that the essay has proven what it set out to prove |
| Connect the specific to the larger context | Step back from the essay's specific argument and show how it relates to a broader issue, debate, or field of inquiry. | Shows the essay's relevance beyond its immediate scope |
| Answer the "so what" question directly | State explicitly why the argument matters — what it means for readers, for the field, or for the problem introduced at the beginning. | Gives the reader a reason to care about the argument |
| Acknowledge complexity | Recognize what the essay cannot resolve, where further inquiry is needed, or where the argument has limits — without undermining the thesis. | Shows intellectual honesty and maturity |
Notice that none of these strategies involves listing the essay's main points again. Every strategy requires the writer to think about the essay's argument in a new way — to step above it and see its shape from the outside.
Synthesis does not mean inventing entirely new arguments in the conclusion. One of the most common conclusion errors is introducing a major claim or piece of evidence that never appeared in the body of the essay. This creates a jarring effect for the reader, who expected the essay to be winding down. New arguments introduced in the conclusion feel undeveloped and unsupported because they are — the essay never made room to develop them.
Synthesis also does not mean being vague or abstract. Some students, trying to write a "big" conclusion, drift into language so general that it says nothing. Statements like "This shows that many things are important in the world today" are not synthesis. They are empty filler. Good synthesis is specific, grounded in the essay's actual content, and clear about what the writer means.
If you find yourself writing about something in your conclusion that never appeared in your body paragraphs, stop. You have two options: move the material into the body where it can be properly developed, or cut it from the conclusion. A conclusion cannot do justice to an argument the essay has not developed.
One of the most effective ways to conclude an essay is to articulate its implications — to tell the reader what follows from the argument that has been made.
Implications are the logical extensions of an argument. If an essay has argued that a certain policy causes a specific harm, the implication might be that the policy should be reformed or reconsidered. If an essay has analyzed a literary text and shown that a particular reading is more supported by the evidence, the implication might be that previous interpretations have missed something important. If an essay has examined a historical event, the implication might involve what the event reveals about the period or what lessons it offers.
Implications give the reader a sense that the essay's argument matters beyond the page. They answer the question: If you accept what this essay has argued, what follows from that?
Writing about implications requires care. There is a real risk of overreaching — making claims that go far beyond what the essay's evidence can support. An essay that analyzes two short stories by a single author should not conclude by claiming to reveal universal truths about all human literature. An essay about traffic patterns in one city should not claim to have solved urban planning for the entire world.
The key is to scale your implications to your evidence. Ask yourself: What can I reasonably claim based on what this essay has actually shown? Small, precise implications are more persuasive than large, vague ones.
This essay proves that technology is destroying human relationships and society must change immediately.
The evidence examined in this essay suggests that the design of certain social media platforms may actively discourage the kinds of deep, sustained attention that healthy relationships require — a finding that has implications for how platforms are regulated and how users, particularly young people, are educated about their use.
Both versions are drawing implications, but the second version is grounded in what the essay actually argued. It is specific about what kind of technology, what kind of relationship, and what kinds of implications follow. This precision makes it more credible and more persuasive.
The skill of articulating implications transfers to every academic subject. A history essay might conclude by addressing what a past event reveals about patterns that persist today. A science report might conclude by suggesting what its findings mean for future research. A business analysis might conclude by addressing what its findings recommend for practice. Wherever you write, implications answer the "so what" question.
Even experienced writers rarely get introductions and conclusions right on the first draft. These are among the hardest parts of an essay to write well because they require a clear understanding of the whole essay — and that understanding often only develops after the body has been written.
One of the most practical pieces of advice in this chapter is this: write your introduction last, or at least revise it substantially after the body is complete. Many writers discover that the essay they finished writing is not exactly the essay they planned to write. The argument evolved, the evidence led somewhere unexpected, or the thesis shifted during drafting. If the introduction was written at the beginning and never revised, it may no longer accurately represent the essay that follows.
The same applies to conclusions. A conclusion written before the body paragraphs have been fully developed cannot synthesize what the essay has actually done. Conclusions often need to be written or rewritten once the body is in good shape.
When revising an introduction, ask yourself the following questions. These questions will identify the most common problems and suggest what needs to change.
When revising a conclusion, similar diagnostic questions help identify what is not working and why.
| Location | Problem | Revision Move |
|---|---|---|
| Introduction | Opening sentences too broad or vague | Cut the first one or two sentences; start closer to the topic |
| Introduction | Thesis too general or merely announces a topic | Rewrite the thesis to make a specific, arguable claim |
| Introduction | Moves too quickly without enough context | Add a sentence or two of relevant background |
| Introduction | Thesis feels disconnected from the opening | Adjust the sequence of sentences so the movement toward the thesis is smoother |
| Conclusion | Simply repeats thesis and body points | Delete the repetitive sentences; replace with synthesis |
| Conclusion | Does not address implications | Add a sentence or two addressing what the argument means or what follows from it |
| Conclusion | Weak final sentence | Rewrite the final sentence to leave the reader with something specific and memorable |
| Conclusion | Introduces new argument | Move material into the body or cut it from the conclusion |
Perhaps the most common introduction error is the "hook" gone wrong. Students are often taught that introductions should begin with a hook — a striking sentence that grabs the reader's attention. In practice, many hooks are empty: they create the form of a dramatic opening without delivering real content.
This approach signals to the reader that the writer could not find a more interesting way into the topic. Dictionary definitions can occasionally be useful, but only when the definition itself is genuinely at issue in the essay — not as a generic opener.
This kind of question creates the impression of engagement but delivers nothing. It asks the reader a question that the essay may or may not answer, and it substitutes a conversational gesture for actual content.
This kind of opening is too broad to be useful. It says something technically true but meaninglessly vast. It could serve as the opening of any essay on any subject related to human society.
This kind of opening is mechanical. It tells the reader what the essay will do without doing it. It announces rather than argues. In some contexts, this kind of signposting is appropriate — but as an opening move, it tends to flatten the introduction.
Beginning a conclusion with "In conclusion," "To summarize," or "As I have shown in this essay" is a weak habit. These phrases are not forbidden, but they are usually unnecessary. The reader knows the conclusion is the conclusion because it is the last paragraph. Announcing it redundantly is a mild form of padding.
More importantly, "in conclusion" openings often lead into mere summary, not synthesis. The phrase trains the writer to list what was already said rather than to think about what it all means. A stronger concluding paragraph opens with a sentence that moves the argument forward. Instead of marking time, open the conclusion by naming the central insight the essay has developed, or by returning to the problem introduced at the beginning — now with the understanding the essay has built.
Some conclusions end too quickly. They synthesize briefly, offer one implication, and then stop. The reader is left feeling that the essay ran out of energy before the end. A conclusion should feel complete — not long for its own sake, but genuinely landed.
Overall, urban green spaces are important and cities should build more of them.
Urban planning that makes room for trees, parks, and natural corridors is not a luxury or a concession to sentiment — it is an investment in the resilience, equity, and health of cities whose long-term success depends on livable environments as much as on economic infrastructure.
The complete version does more work. It is specific, grounded in the essay's argument, and gives the reader a clear, memorable articulation of the essay's central claim. It sounds like the end of something — which is exactly what a conclusion should sound like.
Find two academic or journalistic essays — either from your course readings or from a publication recommended by your instructor. For each introduction: identify where context ends and narrowing begins; identify the thesis statement; evaluate whether the introduction uses the funnel structure effectively; identify one thing the introduction does well; and identify one thing the writer could improve. Write your analysis in prose. Your analysis of each introduction should be at least one full paragraph.
Below are two weak introductory paragraphs. Revise each one to improve the context, the movement toward the thesis, and the thesis statement itself. Your revised versions should be at least as long as the originals, and they should be genuinely improved — not just rephrased.
After revising, write two to three sentences explaining the most important change you made and why.
After revising, write two to three sentences explaining the most important change you made and why.
Take the following list of essay body points and write a conclusion that synthesizes them — do not merely list them again. Your conclusion should be at least four to six sentences. It should not begin with "In conclusion." It should end with a strong final sentence.
Body points made in the essay: Urbanization reduces natural habitat and nesting sites. Some bird species adapt to urban environments while others decline significantly. Light and noise pollution disrupt migration and breeding behavior. Urban green spaces partially offset the negative effects of development.
Your conclusion should connect these points to a larger insight about the relationship between urban development and ecological health.
Exchange a current essay draft with a classmate. Read only the introduction and conclusion. Do not read the body. Write your feedback in full sentences, not one-word answers. Give your classmate something actionable to work with.
Choose one of the following essay prompts. Write only the introduction and conclusion for an essay responding to the prompt. Do not write the body — just the two endpoints. Your introduction should establish context, narrow toward the problem, and end with a clear thesis. Your conclusion should synthesize the implied argument and address its implications. After writing, include a brief note (three to five sentences) explaining the choices you made.
Chapter 22 focused on the two endpoints of the essay — the introduction and the conclusion. Chapter 23 turns to what happens in between: how body paragraphs and body sections develop a thesis through logical order, proportionate evidence, smooth transitions, and analytical grouping. You will learn how to sequence your arguments, how to balance main points and subpoints, and how to ensure the body of your essay lives up to what your introduction promises and what your conclusion synthesizes.