What happened
Learning Scientists author Megan Sumeracki summarized four experiments by Andrew Butler and colleagues on retrieval practice and varied examples. In Experiment 1, undergraduates watched science videos, answered application questions from memory with feedback, then took a new application test two days later. Students who practiced applying each concept to three different examples outperformed those who used the same example three times.
Why it matters
For teachers, instructional designers, and L&D teams, the useful design signal is not just “practice more,” but “practice applying the same concept across different cases.” Sumeracki reports that Experiments 2 to 4 replicated the main finding. In Experiment 3, both retrieval practice conditions exceeded restudy conditions, with reported scores of 68% for variable retrieval, 53% for same retrieval, 51% for variable restudy, and 38% for same restudy. The evidence points toward varied application practice as a practical route to transfer tasks that learners have not seen before.
What to do next
When revising lessons, scenarios, quizzes, or workplace practice, replace some repeated same-example questions with prompts that require the same concept to be applied in different examples. Keep feedback in the practice cycle, as in the experiments. Consider concept labels where learners may miss connections, since Sumeracki reports a slight improvement in one varied-question condition. Treat scope carefully: the described participants were undergraduates learning science topics, so pilot before broad adoption.
About this briefing
Reviewed by TutorFlow Editorial. We link the primary source, preserve its publication date, and distinguish reported claims from TutorFlow analysis. Our commentary focuses on practical decisions for educators and training teams.
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