CDLA · Module 2 — Learning science for digital media
Roediger & Karpicke (2006): a recall test outperforms restudy on delayed retention. Do not invent 24-hour forgetting percentages.
About 16 min
Practice in the lesson player
Sorting, matching, quizzes, and the module gate stay behind a free account so scored answers are not public. The teaching notes below are the same cited curriculum.
01
Roediger and Karpicke had students either restudy a prose passage or take a free-recall test. On an immediate test, restudy can look as good or better. After two days and after a week, testing produced better retention — the testing effect. This academy will not quote a “70% forgotten in 24 hours” line; that figure is not from this paper and is usually a distortion of older memory research.
02
Looks busy, weak later: Click-through recap of the same slides. · Highlighting a PDF of the policy. · Watching the procedure video again “for confidence.”
Looks harder, stronger later: Close the notes and reconstruct the five steps. · A delayed scenario that uses yesterday’s rule. · Generate the error code from the symptom, then check.