1Cademy - Test-Enhanced Learning: Experiment 1 Graph

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Test-Enhanced Learning: Experiment 1 Graph

Within the five minute retention tests in Experiment 1, restudying produced eighty one percent better recall than the seventy five percent for testing. For the two day retention tests, the initially tested group recalled sixty eight percent more than the additional-study group of fifty four percent.
The tested subjects were able to recall fifty six percent of the material, but the restudy group recalled forty two percent more of the material, for the one week retention tests.
The main effect of initial testing promoting better recall on delayed retention tests, as opposed to additional studying are observed here. While testing promotes better recall for two day and one week tests, restudying promotes better performance on the five minute, immediate tests.
Figure 1 implies another main effect: forgetting occurred as the retention interval grew longer. Since the initially tested group recalled not just as much but more, it can be concluded that taking this initial recall test actually prevented forgetting.

Updated 2021-01-24

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