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Exam details
A learning technique where material is reviewed at gradually increasing intervals. Each successful recall pushes the next review further into the future, optimising long-term retention.
Hermann Ebbinghaus's finding that memory decays exponentially over time without reinforcement — we forget ~50% within an hour and ~70% within 24 hours of learning.
By timing reviews just before you would forget, each review resets and strengthens the memory trace, making the forgetting curve shallower with each repetition.
The act of recalling information from memory — rather than re-reading — strengthens memory far more than passive review. Tests are not just assessments; they are powerful learning events (Roediger & Karpicke, 2006).
Mixing different topics or problem types within a study session, rather than blocking. Harder in the short term but leads to better long-term retention and transfer.