During study (left) - every group looked identical -meaning everyone “learned.”
One week later (right) - only the Study + Test (ST) group still remembered ≈ 80 % of the material; the reread-only crews fell to ≈ 30 %.
TL;DR: hitting “reply” (retrieval) ⏩ scrolling (review).
Brains lock info in when we retrieve or explain it. One classic Science paper found self-testing doubled retention vs. rereading.
https://t.co/tRNOVfazlM
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