Active Recall: How to Study by Testing Yourself

Updated October 6, 2026 · By the Revizly team

Active recall is studying by pulling information out of your memory instead of putting it back in. You close the book and try to answer a question, explain an idea or write down what you remember, then check. It feels harder than rereading, and that difficulty is exactly why it works.

Real example

Cognition and Brain: The Cognitive Approach

What went in: A PDF of lecture slides from a college cognitive psychology class, uploaded by a student.

Active recall in practice: ten cards Revizly wrote from that lecture. Try to answer each one before you flip it.

The flashcards

What is active recall?

Active recall, also called retrieval practice, is any way of studying where you produce the answer from memory before looking at it. Flashcards, practice questions and writing out everything you know on a blank page all count.

The opposite is passive review: rereading your notes, highlighting, watching the lecture again. Passive review makes the material feel familiar. Active recall checks whether you can actually come up with it when nothing is in front of you, which is the situation you’ll be in on the exam.

Every time you successfully pull something out of memory, you make it easier to pull out the next time. Every time you fail and then check the answer, you learn exactly what you were missing. Both outcomes are useful, which is why getting cards wrong is part of the method, not a sign it isn’t working.

What the research shows

Active recall is one of the best-supported study techniques in learning research. Across many experiments, students who test themselves remember far more days later than students who spend the same time rereading.

Testing beats rereading a week later

In a classic 2006 study, Roediger and Karpicke had students learn prose passages either by reading them four times or by reading once and then trying to recall them three times. Five minutes later, the rereaders did better. One week later, the recall group remembered 61 percent of the material and the rereading group 40 percent, even though the rereaders had predicted they would do better.

Dropping cards too early backfires

In a 2008 study published in Science, students learned foreign vocabulary pairs. Those who kept being tested on words they had already gotten right recalled about 80 percent a week later. Those who stopped testing a word once they knew it, and only restudied it, recalled about a third. Getting a card right once doesn’t mean you’re done with it.

It works for understanding, not just facts

A 2011 study by Karpicke and Blunt compared retrieval practice with building concept maps from a science text. Retrieval practice produced better results a week later, including on questions that asked students to make inferences, not just repeat facts.

Rated one of the two most useful techniques

A large 2013 review led by John Dunlosky rated ten common study techniques. Practice testing and distributed practice (spreading study over time) were the only two rated high utility. Rereading and highlighting were rated low utility.

Four ways to use active recall in any class

Use flashcards for terms and facts, practice questions for applying ideas, the blank-page method for whole topics, and explaining out loud for anything you think you understand. Mix them through the week.

1. Flashcards

Best for definitions, names, dates, drug classes, formulas and vocabulary. Read the question, say the answer, then flip. If you hesitated, count it as wrong. Combine them with spaced repetition so you see each card right before you’d forget it.

2. Practice questions

Best for checking that you can use what you know, the way an exam will ask you to. Answer without your notes, then read the explanation for every question you missed and go back to that part of the material.

3. The blank page (blurting)

Pick a topic, close everything, and write down all you can remember about it for ten minutes. Then open your notes and mark what you missed or got wrong in a different color. What you missed is your study list for tomorrow.

4. Explain it out loud

Explain a concept as if to a friend who missed class, without looking. The moment you say “it’s kind of like…” and trail off, you’ve found a gap. Check the material, then try again.

Active recall and spaced repetition work together

Active recall is how you study, spaced repetition is when. Testing yourself on a topic once is good, testing yourself again after a few days, then a week, then longer, is much better.

The two research findings point the same way: retrieve information instead of rereading it, and spread those retrieval sessions out over time. A daily ten-minute flashcard session with a spaced schedule does both at once. Cramming the night before uses active recall but skips the spacing, which is why what you crammed is often gone a week later.

Common active recall mistakes

The usual mistakes are peeking before answering, giving yourself credit for half-answers, only testing what you already know, and spending more time making cards than using them.

Flipping the card before committing to an answer. Say it or write it first, every time.
Counting “I would have gotten that” as correct. If you hesitated, mark it wrong.
Skipping the hard cards. The ones you dread are the ones that need it.
Rewriting notes and calling it active recall. Copying is passive, even when it’s by hand.
Spending three hours making flashcards and twenty minutes using them. The making isn’t the studying.

Using Revizly for active recall

Revizly takes care of the slow part. Upload your slides, notes or a PDF and it writes the flashcards and practice questions for you, then schedules the cards with spaced repetition, so your time goes into answering.

The demo on this page shows what that looks like for a cognitive psychology lecture: short questions, short answers, one idea per card. The free plan covers 2 classes a month, and paid plans start at $6.99 a month.

Start testing yourself today

Upload your notes or slides and get flashcards and practice questions to answer, scheduled with spaced repetition. The free plan covers 2 classes a month.

PDF, photos, Word, PowerPoint or a YouTube linkYou can upload right after you sign in

Frequently asked questions

What is active recall in simple terms?

It means testing yourself. Instead of reading the answer, you try to remember it first, then check.

Is active recall the same as retrieval practice?

Yes. Retrieval practice is the term researchers use. Active recall is the term most students use. Both mean pulling information out of memory to learn it.

Is active recall better than rereading?

For remembering material days or weeks later, yes. Rereading can look better a few minutes after studying, but testing yourself wins on any delayed test, which is what an exam is.

How long should an active recall session be?

Short and frequent works best. Ten to twenty minutes a day, spread across the week, beats one long session before the exam.

Are flashcards active recall?

Yes, as long as you answer before flipping. Reading both sides of a card without trying to answer is just rereading on small pieces of paper.

What is the blurting method?

It’s an active recall technique: close your notes, write down everything you remember about a topic, then check your notes and fill in what you missed.

Does active recall work for math and science?

Yes. For math and science, the recall is solving problems without looking at a worked example, then checking your steps.