Retrieval: test yourself instead of reviewing

Recall the material from memory rather than re-reading it.

Why it works

Trying to retrieve information strengthens memory far more than passively reviewing it, because the effortful act of pulling something from memory reconsolidates and reinforces the trace. Re-reading produces a fluent, familiar feeling that masquerades as knowing; retrieval reveals what you can actually produce on demand. This is the testing effect, one of the most reliable findings in learning science.

How to do it

1. After studying, close the material and try to reproduce it from memory.
2. Turn notes into questions and answer them cold before checking.
3. Treat retrieval failures as the signal of what to restudy, not as wasted effort.

Evidence

The testing effect — that retrieval practice produces stronger long-term retention than restudying — is one of the most robustly replicated results in cognitive psychology, supported by many controlled experiments and meta-analyses. (rct)

Retrieval helps most when it is effortful but ultimately successful; if material is far too hard to retrieve at all, some restudy is needed first.

Sources

• Roediger & Karpicke (2006), "Test-Enhanced Learning", Psychological Science

Common mistake

Re-reading and highlighting because it feels productive and fluent, then mistaking that recognition for the ability to recall it later.