Tomorrow, 3 days, 7 days: the review rhythm that sticks
Ten hours of revision the night before, or the same ten hours spread over a week and a half? It's the same work. But one way leaves much more in your head on exam day.
Your memory has a curve
Between 1880 and 1885, the German psychologist Hermann Ebbinghaus measured his own forgetting. He learned lists of nonsense syllables like "WID" or "ZOF" (so that meaning couldn't help him), then tested himself again and again to see how fast they faded. What he found still holds: right after you learn something, you forget it fast, especially in the first days. Then the forgetting slows down.
Here is the good news: each time you remember something just as it starts to fade, it comes back stronger, and the next fade is slower. So the best moment to review is not "as soon as possible". It's when you have forgotten a little.
Spread out beats crammed
Psychologists call this the spacing effect. A large review of more than 300 experiments (Cepeda and colleagues, 2006) found it again and again: the same study time, spread over several days, is remembered better than one long session. In the 2013 review of study techniques by Dunlosky's team, spreading your practice was one of only two techniques rated high.
Why does cramming feel better? Because everything is fresh: it all feels easy that evening. Spacing feels harder, because you have forgotten a bit. That small struggle is not a sign it isn't working. It's the reason it works.
A simple rhythm
- Wrong at a review? No drama: it goes back to "tomorrow".
- Right on 2 different days? Now it's solid. Right twice in ten minutes is short-term memory, not yet yours.
- Review by testing yourself (a blank page, a few questions, your flashcards), not by re-reading.
With an exam in 10 days
- Split the module into small parts and give each part a first day.
- Put its reviews in your calendar: the next day, 3 days later, 7 days later (or the day before the exam if 7 is too far).
- Each day, start with what's due for review (10–20 minutes), then learn something new.
- Keep the last day light: reviews only, no new chapters.
Try it tonight
Write today's topic in your calendar three times: tomorrow, in 3 days, in 7 days. Tomorrow, before anything else, write 5 things you remember about it, then check.
MajorMind does this for you: your mistakes and flashcards come back by themselves tomorrow, in 3 days and in 7 days, and the Today list tells you what's due. Free.
Join the betaSources
- Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4–58.
- Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380.
- Ebbinghaus, H. (1885). Memory: A contribution to experimental psychology (English translation 1913).