Rereading a chapter or highlighting a textbook creates a strong, misleading feeling of familiarity. The words look recognizable, so the material feels learned. But recognizing a sentence you've just read and being able to produce that information later, without the page in front of you, are very different skills — and only the second one is what an exam or a real-world task actually asks for.
The more reliable approach is active recall: closing the book and trying to retrieve the information from memory before checking whether you got it right. It feels harder and slower in the moment, which is exactly why people avoid it — but that extra effort is what makes the memory stronger.
A few ways to build active recall into a normal study session:
- After reading a section, close it and write down everything you remember, in your own words, before looking back to check.
- Turn headings and subheadings into questions beforehand, then answer them from memory once you've studied the material.
- Explain the topic out loud as if teaching it to someone with no background in it. Gaps in your explanation point straight to gaps in your understanding.
- Use flashcards that ask you to produce an answer, not just recognize one — a blank you fill in, rather than a multiple-choice option you pick.
It's uncomfortable at first, because it exposes what you don't actually know. That discomfort is the point — it's much better to find the gap while studying than during a test.