Active Recall: What It Is and 7 Ways to Study With It

Active recall is a study method where you pull information out of your memory instead of reading it again. You close your notes, answer a question or write down everything you remember, and only then check what you got right. Researchers call this retrieval practice, and the memory boost it produces is known as the testing effect. It works because retrieving information makes it easier to retrieve later, and every miss shows you exactly what to study next.

This guide is for high school and college students, pre-med and med students, language learners, and self-learners who want to remember more without studying longer.

Key takeaways

• Active recall means retrieving, not rereading. Close the book, produce the answer, then check it.
• The evidence is strong. In a classic 2006 experiment, recall practice beat rereading a week later: 61% vs. 40% of a passage remembered.
• It feels harder, and that's normal. Rereaders felt more confident but forgot more.
• Seven techniques cover almost any subject: blank-page recall, practice questions, flashcards, teaching, cover-and-recall, past papers, and a brain-dump warm-up.
• Pair it with spaced repetition. Active recall is how you review; spacing decides when.

Contents

• What is active recall
• Active recall vs rereading
• Why active recall works
• 7 active recall techniques with examples
• Which technique fits your subject
• How to combine active recall and spaced repetition
• A one-week active recall study plan
• Common active recall mistakes
• FAQ
• Start using active recall today

What is active recall

Active recall is any study activity that makes you produce an answer from memory: answering "What are the four stages of mitosis?" before you look, writing the causes of World War I on a blank page, or saying a Spanish word before you flip the flashcard.

The opposite is passive review, such as rereading, highlighting, or rewatching lectures, which only asks you to recognize information in front of you. Exams ask you to recall it from nothing, so active recall practices the skill you'll actually be tested on.

Researchers call the activity retrieval practice or practice testing, and its result the testing effect. The "test" needs no grade: a self-quiz, a flashcard, or explaining a topic out loud all count.

The 3-step active recall method

1. Learn it once. Read the section or attend the lecture until it makes sense.
2. Retrieve it. Close your notes; write, say, or solve from memory.
3. Check and correct. Fix what you missed and decide when to try again.

Active recall vs rereading

Rereading isn't useless; you need one pass to understand the material. The problem is making it your main way to review, as most students do: in a survey of 177 college students by Jeffrey Karpicke, Andrew Butler, and Henry Roediger (Memory, 2009), a majority repeatedly reread their notes or textbook, and relatively few tested themselves.

In 2013, John Dunlosky and four colleagues rated 10 learning techniques(opens in a new tab) and gave "high utility" ratings to only two: practice testing and distributed practice. Rereading and highlighting rated low, and the authors suggest "practice testing instead of rereading."

Why active recall works

Active recall is one of the most researched study techniques. Three findings matter most.

Recall beats rereading after a delay

Henry Roediger and Jeffrey Karpicke (2006)(opens in a new tab) had undergraduates at Washington University in St. Louis learn short prose passages from a TOEFL prep book. In one experiment, some students read a passage four times; others read it once and then recalled it three times, writing everything they remembered on a blank sheet, without feedback.

• Five minutes later, rereading looked better: 83% of the passage recalled vs. 71%.
• One week later, it flipped: 61% for the recall group, 40% for the rereaders.

The rereaders had read the passage 14.2 times on average, the recall group 3.4 times. The rereaders were also the most confident they'd remember it, yet performed worst: rereading creates an illusion of knowing.

Keep testing facts you already got right

In a 2008 study in Science(opens in a new tab), Karpicke and Roediger had 40 students learn 40 Swahili–English word pairs, such as mashua–boat. After a pair was recalled correctly, it either stayed in the quizzes or was dropped. A week later, students who kept being tested recalled about 80% of the pairs. When pairs were dropped from testing, recall fell to 36% and 33%, even with continued restudying. Every group predicted it would remember about 50%.

It builds understanding, not just memorized facts

Jeffrey Karpicke and Janell Blunt (Science, 2011) compared recall practice with concept mapping, using the same study time. A week later, the recall group scored 67% on a short-answer test versus 45% for concept mapping, roughly 50% better, including on inference questions that required connecting ideas. In a second experiment, 101 of 120 students (84%) did better after retrieval practice, though 75% expected concept mapping to work as well or better.

The exact mechanism is still debated, but effort seems to matter: a 2014 meta-analysis by Christopher Rowland (Psychological Bulletin) found that recall tests produced larger benefits than recognition tests such as multiple choice.

7 active recall techniques with examples

Pick two or three that suit your subject. Each follows the same rule: answer first, check second.

1. Blank-page recall

After studying a topic, close everything and spend about 10 minutes writing all you remember on a blank sheet: key terms, diagrams, steps. Then open your notes and fill the gaps in a different color; those parts are what you study next. This is often called blurting.

• Biology: draw and label the stages of photosynthesis from memory.
• History: list the causes of the French Revolution, with evidence for each.

2. Practice questions

Turn notes into questions as you take them: rewrite each heading as a question ("What do mitochondria do?") or use the cue column of Cornell notes. Later, cover your notes and answer. End-of-chapter questions and problem sets work too. Prefer short-answer and "explain why" questions over multiple choice.

• Math and physics: cover the solution to a worked example and solve it yourself. Stuck? Reveal one line, cover it again, and keep going.

3. Flashcards

The rule that makes flashcards work: say or write the answer before you flip. Keep one fact per card, test language cards in both directions, and keep reviewing cards you got right instead of retiring them. Our guide on how to make flashcards covers the card-writing rules.

If writing cards is your bottleneck, Deckbase's free AI flashcard maker turns pasted notes into up to 10 draft cards per run, with no sign-up. Edit the draft before you study it.

4. Teach it out loud

Explain a topic out loud, without notes, as if teaching a classmate who missed the lecture. This is often called the Feynman technique, after physicist Richard Feynman. Wherever you stall or hide behind jargon, you've found a gap.

• Pharmacology: how beta blockers lower blood pressure.
• Chemistry: why ice floats on water.

5. Cover-and-recall

Hide half the page and recall the other half: the English column of a vocabulary list, the labels on an anatomy diagram, or the notes side of a Cornell page. It needs no preparation.

6. Past papers and timed practice tests

Once you've covered the material, take a past paper closed-book and timed, then mark it with the official answer key. Log each error and why you missed it, then turn it into a flashcard. This works for AP, SAT, GCSE, A-level, MCAT, and USMLE practice alike.

7. The brain-dump warm-up

Start every session with a 3-to-5-minute brain dump: before opening anything, write down everything you remember from last time, then quiz yourself on what didn't come back. Your warm-up becomes spaced retrieval practice.

You can also try a new chapter's questions cold before reading it. In six experiments, Nate Kornell, Matthew Jensen Hays, and Robert Bjork (2009) found that attempting an answer before seeing it improved learning over reading the question and answer together, even when the attempt failed.

Which technique fits your subject

How to combine active recall and spaced repetition

Active recall decides how you review: by retrieving. Spaced repetition decides when: at growing intervals, just before you would forget. Spacing, or distributed practice, was the other technique the Dunlosky review rated high utility.

How long should the gaps be? In a study of more than 1,350 people, Nicholas Cepeda and colleagues (Psychological Science, 2008) found that the best gap between learning and reviewing depends on how long you need to remember: about 20–40% of the retention interval for a final test 1 week later, but only about 5–10% for a test 1 year later. In practice:

• Exam in about a week: review about 2 days after first learning the material (20–40% of 7 days is 1.4 to 2.8 days).
• Need it for a year: review about 2.5 to 5 weeks later (5–10% of a year is 18 to 37 days).
• Missed it? Shorten the next gap. Got it easily? Lengthen it.

Past a few dozen facts, let a spaced repetition app track the intervals (new to Anki? Start with how to use Anki). Our FSRS guide explains how one modern algorithm schedules each card, and the spaced repetition calculator shows a single card's next review date.

A one-week active recall study plan

This plan assumes one subject, four new topics (chapters, lectures, or vocabulary units), 45–60 minutes a day, and a test at the end of the week: about 5.5 hours in total.

Each topic is retrieved the day you learn it, again 1 to 3 days later, and again in mixed practice or the practice test.

Active recall checklist

Before you end a session, check that:

• Your notes were closed while you recalled.
• You produced each answer before checking it.
• You checked every answer against the source.
• Misses are marked in color or turned into cards.
• You mixed in at least one older topic.
• You know when you'll review this material next.

Common active recall mistakes

• Peeking too soon. Flipping before you commit to an answer turns recall back into recognition. Say or write it first, even as a guess.
• Only quizzing what you already know. Easy wins teach little; spend most of your time on misses.
• Skipping the check. Without checking, you can't tell a right answer from a confident wrong one.
• Retiring a fact after one correct answer. In the Swahili study, dropping words from testing cut recall a week later from about 80% to about a third.
• Cramming all your recall into one night. It may get you through tomorrow's quiz; spaced sessions make memories last.
• Judging the method by how it feels. Recall feels harder than rereading, and in the studies above, students repeatedly misjudged which method worked better.

FAQ

Is active recall better than rereading?

For anything you need to remember beyond the next few minutes, yes. In Roediger and Karpicke's 2006 study, rereading won on a test five minutes later, but students who practiced recall remembered far more a week later: 61% of the passage versus 40%. Reread once to understand, then switch to recall.

How long should an active recall session be?

Short and frequent beats long and rare. A 5-minute brain dump, 10 minutes of blank-page recall, or 20 to 30 minutes of flashcards or practice questions all work. What matters most is returning to the material over several days, not one marathon session.

Can you use active recall with flashcards?

Yes. Flashcards are one of the easiest ways to practice active recall, as long as you answer before you flip. Say or write the answer, then check it and grade yourself honestly. Keep one fact per card, and keep reviewing cards you got right on a spaced schedule.

What is the difference between active recall and spaced repetition?

Active recall is how you review: by retrieving information from memory instead of rereading it. Spaced repetition is when you review: at increasing intervals, just before you would forget. They solve different problems and work best together, which is what a flashcard app with a spaced repetition scheduler does.

What is the testing effect?

The testing effect is the finding that taking a test on material improves long-term memory of it more than spending the same time restudying. It's the research name for why active recall works. The tests can be informal: self-quizzes, flashcards, and practice questions all count, with no grade attached.

Start using active recall today

So, what is active recall? It's the habit of closing the book and pulling answers out of memory before you check them. Rereading feels productive, but retrieval builds memories that last, especially when spread over several days.

Your next steps:

1. Tonight: do a 10-minute blank-page recall of one topic from this week.
2. Tomorrow: start with a 5-minute brain dump, then turn what you missed into flashcards.
3. This week: follow the one-week plan and run the checklist after each session.

Want scheduling handled for you? Deckbase schedules reviews with FSRS on web, iOS, and Android; paste your notes into the free AI flashcard maker for a first draft of cards.