Study guides / Methods
Active Recall: What It Is and 6 Ways to Practise It
Active recall is studying by pulling an answer out of memory instead of looking at it again. You close the page, try to answer a question, then check yourself. It feels harder than rereading, and that effort is why it works.
What is active recall?
Active recall (also called retrieval practice) means producing information from memory: writing it, saying it or choosing it from options, rather than reading it again. Rereading a chapter makes the words feel familiar. Recall asks whether you can produce them, which is what an exam asks too.
Why does it work?
In a well-known 2006 experiment, Roediger and Karpicke had students read a short passage. Some then reread it several times; others practised recalling it. Rereaders did better on a test five minutes later, but the students who had practised recall remembered more a week later. In a 2011 study in Science, Karpicke and Blunt found that retrieval practice beat making a concept map from the text, even when the final test asked for concept maps. These are lab studies with short texts, so treat the size of the effect as an estimate, not a promise about your next exam.
Six ways to practise it
1. Flashcards
The best-known method. Each card asks one question; you answer before flipping. Use them for terms, comparisons and short processes. See how to make flashcards that test understanding.
2. Practice questions and past papers
The closest match to the real exam. Answer under realistic conditions, then mark the answers honestly. Keep a list of what you missed.
3. Blurting
Read a section, close it, and write everything you remember on a blank page. Then compare with the source in a different colour and note what you missed or got wrong. It is fast and needs no preparation, but it works best for topics with a clear structure. Full steps are in the blurting method guide.
4. Explaining it out loud
Explain the idea as if teaching a beginner, with no notes. Wherever you stall or fall back on jargon, you have found a gap. This is the idea behind the Feynman technique.
5. Questions from your own reading
As you read a PDF or watch a lecture, write a question for each important idea, then answer them later with the source closed. See how to study from a PDF. The same approach works for video lectures.
6. Cover and recall
Cover the body of your notes, leaving only the headings. Say what is under each heading, then lift the cover and check. It takes under a minute per page.
How to choose
- Facts, terms and vocabulary: flashcards.
- Problem-solving subjects such as maths or physics: practice questions.
- Essay subjects and big concepts: blurting or explaining out loud.
- Short on time: cover and recall.
Most people end up mixing two or three. The method matters less than the habit of trying an answer first.
Mistakes that undo the benefit
- Peeking too soon. Give yourself a real attempt before you check.
- Testing only what you already know. Easy cards feel good and teach little. Spend more time on the ones you miss.
- No feedback. Always check against the source, then fix your answer. Otherwise you may practise a wrong answer.
- Doing it once. Come back later. Spacing your sessions is what turns one good session into lasting memory.
Common questions
Is active recall the same as spaced repetition?
No. Active recall is what you do in a session: try to produce the answer. Spaced repetition is when you do it: repeating recall over increasing gaps. They work well together.
How often should I practise?
Several short sessions beat one long one. Try a first session on the day you learn something, another a day or two later, and another a week after that, then adjust based on what you miss.
Does active recall work for maths and essay subjects?
Yes, in different forms. For maths, solve problems without looking at worked solutions. For essays, practise writing outlines and arguments from memory.
Why does active recall feel harder than rereading?
Because you are doing the work of remembering. The effort is the point, and the difficulty is a useful signal, not a sign that you are failing. If something is too hard to start, look at the answer once, then try again later.