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Related Experiment Video

Updated: Mar 1, 2026

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
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A dual memory theory of the testing effect.

Timothy C Rickard1,2, Steven C Pan3,4

  • 1University of California, San Diego, La Jolla, CA, USA. trickard@ucsd.edu.

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|June 7, 2017
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Summary

Retrieval practice, or the testing effect, enhances learning by forming separate memories during study and testing. A new quantitative model accurately predicts learning outcomes and the testing effect across various experimental conditions.

Keywords:
MemoryQuantitative modelRetrieval practiceTest-enhanced learningTesting effect

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Area of Science:

  • Cognitive Psychology
  • Educational Psychology
  • Learning Sciences

Background:

  • The testing effect, where retrieval practice improves learning more than other strategies, is a well-established phenomenon.
  • Existing theories often lack quantitative predictive power for the testing effect across diverse learning scenarios.

Purpose of the Study:

  • To propose a new theoretical framework and a quantitative model for the testing effect.
  • To explain how separate memory traces form from study and test events.
  • To predict learning outcomes and the magnitude of the testing effect.

Main Methods:

  • Developed a novel theoretical framework for the testing effect.
  • Derived a parameter-free quantitative model for cued recall based on the framework.
  • Validated the model against 10 laboratory experiments with varied materials, retention intervals, and restudy performance.

Main Results:

  • The quantitative model accurately predicted proportion correct and the testing effect magnitude without free parameters.
  • The model provided first-time quantitative accounts for the testing effect's dependence on restudy performance, feedback, and retention interval.
  • The framework also offered explanations for related phenomena like test-potentiated learning and transfer effects.

Conclusions:

  • The proposed theoretical framework and quantitative model offer a robust explanation for the testing effect.
  • The findings highlight the importance of separate memory formation during study and testing for enhanced learning.
  • The model's predictive accuracy across diverse conditions supports its generalizability and utility in understanding learning.