Schedule a second review 24–48 hours later
Return to your heading-questions the next day — before you have forgotten them completely.
Key takeaways
- What it is: Return to your heading-questions the next day — before you have forgotten them completely.
- Why it works: The forgetting curve is steepest in the first 24 hours. A review before complete forgetting reactivates the memory at a point when retrieval is still possible but already somewhat effortful — the sweet spot that produces the largest long-term retention gain per unit of study time.
- Evidence: Backed by randomized trials / meta-analyses.
- Avoid: Waiting until before the exam to review, which is massed practice — it feels like you know the material at exam time but produces little durable memory beyond it.
Why it works
The forgetting curve is steepest in the first 24 hours. A review before complete forgetting reactivates the memory at a point when retrieval is still possible but already somewhat effortful — the sweet spot that produces the largest long-term retention gain per unit of study time.
How to do it
- 1After the same-day review, set a calendar reminder for 24–48 hours later.
- 2At that review, use only the question list; answer without looking at the answers.
- 3Mark any items you miss and schedule them again sooner.
- 4Items you answer correctly can wait longer before the next review.
What the evidence says
RCT / meta-analysisThe spacing effect — that distributed review beats massed practice for long-term retention — is one of the best-replicated findings in memory research. A 24-hour delay is well within the supported range for an early-interval review.
Honest caveat: Optimal spacing depends on the desired retention interval; 24–48 hours is a reasonable starting point, not a universal prescription.
- — Cepeda et al. (2006), distributed practice in verbal recall, Psychological Bulletin
Common mistake
Waiting until before the exam to review, which is massed practice — it feels like you know the material at exam time but produces little durable memory beyond it.
IX Coach schedules your follow-up touchpoints automatically — you don’t have to remember when to review because the app tracks what you studied and queues it at the right interval.
Practice this with IX Coach →