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Effect of Interpolated Questions on Podcast Knowledge Acquisition and Retention: A Double-Blind, Multicenter,
Michael Weinstock1, Michael Pallaci2, Adam R Aluisio3
1Adena Emergency Medicine Residency, Chillicothe, OH; Department of Emergency Medicine, Wexner Medical Center at The Ohio State University, Columbus, OH.
Interpolated questions in educational podcasts significantly improved knowledge retention in emergency medicine trainees after 2-3 weeks. This strategy enhances recall of specific material, suggesting a valuable tool for medical education.
Area of Science:
- Medical Education
- Knowledge Retention Strategies
- Audio Learning
Background:
- Podcasts are increasingly used in medical education.
- The effectiveness of specific pedagogical techniques within podcasts, such as interpolated questions, requires further investigation.
Purpose of the Study:
- To evaluate if interpolated questions embedded in a podcast enhance knowledge acquisition and retention among emergency medicine trainees.
Main Methods:
- A double-blinded controlled trial randomized 137 trainees to listen to a podcast with or without 5 interpolated questions.
- Two post-podcast assessments were conducted: immediate (within 48 hours) and delayed (2-3 weeks).
- Knowledge was assessed using 15 multiple-choice questions, with 5 directly related to the interpolated content.
Main Results:
- No significant difference in immediate posttest scores between groups.
- Trainees who listened to podcasts with interpolated questions showed significantly higher mean scores on the retention test (5.6% absolute difference).
- The intervention group demonstrated significantly higher scores on both immediate and retention tests for material covered by interpolated questions.
Conclusions:
- Podcasts incorporating interpolated questions improve long-term knowledge retention, particularly for the targeted material.
- While gains may be modest, this method offers a practical approach for educators to enhance learning outcomes in audio-based educational content.
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