2026-06-13
Spaced repetition: review when forgetting is about to happen
Short answer
Spaced repetition is a review method that brings material back before you are likely to forget it. Easy cards wait longer; hard cards return sooner.
Key takeaways
- Forgetting is normal, not a personal failure.
- Review timing matters as much as review quantity.
- Hard material should return sooner than easy material.
Forgetting is not a personal failure. It is the default behavior of memory. Spaced repetition works because it schedules a review close to the moment your memory is becoming fragile.
If a card is easy, it can wait longer. If it is hard, it should come back sooner. Over time, this turns studying from panic cramming into a rhythm.
The goal is not to review everything every day. The goal is to review the right thing at the right time.
Frequently asked questions
What is spaced repetition?
Spaced repetition is a study method that schedules reviews over increasing intervals so you revisit material before it fades from memory.
Why does spaced repetition work?
It works because recalling information near the edge of forgetting strengthens memory more than reviewing everything every day.
Should I use spaced repetition with active recall?
Yes. Active recall creates the retrieval attempt, and spaced repetition decides when each question should come back.