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Reading & Comprehension

Previewing Before You Read: A Two-Minute Map

Moderate or mixed evidence 5 min read Level: Beginner Reviewed October 30, 2026

Previewing means skimming headings, images and summaries before you read. See how a two-minute scan can set up your reading, plus its limits.

Evidence rating: Moderate or mixed evidence. Studies on advance organizers, short overviews given before a text, find that they can help comprehension, especially when the reader knows little about the topic (Ausubel, 1960; Mayer, 1979). Results are mixed, and most studies test a prepared overview, not a student's own quick skim. Previewing was not one of the ten techniques rated in Dunlosky et al. (2013), so treat it as a sensible habit with some support, not a proven fix. How we rate evidence

What it is

Previewing is a short scan you do before you read a chapter or article in full. You look at the title, the headings, the bold terms, the charts, the first line of a few paragraphs and the summary or review questions at the end. You are not trying to learn the content yet. You are trying to see its shape.

Think of it like looking at a map before a road trip. You still have to drive every mile, but you know where the big turns are. When you later meet a new term, you already know whether it is a main idea or a small detail.

Researchers who study advance organizers, which are short overviews placed before a text, have found that this kind of setup can help readers connect new facts to what they already know (Ausubel, 1960). Previewing is the do-it-yourself version. It works best with textbooks and articles that have clear headings. It does little for a novel or a text with no structure.

A good preview takes about two to five minutes. If you spend twenty minutes on it, you are probably reading the chapter in a rushed way, which is a different thing.

When to use it

  • You are starting a textbook chapter that feels long or dense.
  • The topic is new to you and you do not yet know which ideas are the big ones.
  • You have limited time and need to decide which sections need slow reading.
  • You tend to get lost in details and forget what the section was about.

How to apply it

  1. Read the chapter title and any introduction paragraph. Ask yourself what the chapter is probably about.
  2. Flip through the headings and subheadings. Write them as a short list on paper. This is your map.
  3. Look at the pictures, charts and bold terms. Read the captions. Note any term you do not know.
  4. Read the summary, the learning goals or the review questions at the end. These tell you what the author thinks matters most.
  5. Write two or three questions you want the reading to answer, such as: What causes inflation? How is it measured?
  6. Read the chapter at a normal pace, with your questions nearby. Slow down on the parts that match your questions.
  7. Afterward, close the book and answer your questions from memory. Check what you missed.

Step-by-step examples

Example: a 25-page economics chapter

  1. The chapter is called Inflation and Interest Rates. You spend three minutes on it before reading.
  2. The headings are: What Is Inflation, How It Is Measured, Causes of Inflation, and How Central Banks Respond. You copy them onto a sheet.
  3. A chart shows prices over 40 years, and a bold term, consumer price index, appears in the second section.
  4. You write two questions: What does the consumer price index measure? Why do central banks change interest rates?
  5. While reading, you spend most of your time on those two sections. After reading, you answer the questions without looking.

Example: a short science article for class

  1. Your teacher assigns a six-page article on coral reefs. Read only the title, the abstract or first paragraph, and the last paragraph.
  2. Note that the article seems to be about warming oceans and bleaching. Write: What is bleaching? What can reduce it?
  3. Glance at the two graphs and read their labels.
  4. Now read the article in full. Underline the sentences that answer your two questions.
  5. Write a two-sentence answer to each question from memory.

Advantages

  • Takes only a few minutes and needs no tools beyond paper.
  • Gives you a mental outline, so details have somewhere to go.
  • Helps you choose which parts to read slowly and which to skim.
  • Turns headings into questions, which makes reading more purposeful.

Limitations

  • Research support is mixed. Most studies use overviews written by researchers, not a student's own scan.
  • It helps less when the material has no headings or clear structure, such as a story.
  • A preview can give a false feeling of knowing the topic. You have not learned it until you can recall it.
  • If you already know the subject well, the benefit is likely small.

Common mistakes

  • Spending so long on the preview that it becomes a first read.
  • Skimming and then skipping the real reading.
  • Previewing without writing any questions, so nothing guides the reading.
  • Ignoring the end-of-chapter questions, which often show what will be tested.
  • Believing the preview is enough, and not testing yourself afterward.

Recommended next steps

Part of the path Read More Effectively (step 1 of 5). Next in this path: The SQ3R Method: Survey, Question, Read, Recite, Review.

References

  1. Ausubel, D. P. (1960). The use of advance organizers in the learning and retention of meaningful verbal material. Journal of Educational Psychology, 51(5), 267-272.
  2. Mayer, R. E. (1979). Can advance organizers influence meaningful learning? Review of Educational Research, 49(2), 371-383.
  3. Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest, 14(1), 4-58.

This guide is general educational information. Study methods work differently for different people, and no method guarantees better grades or results.

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