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The effect of testing can increase or decrease misinformation susceptibility depending on the retention interval.

Ayanna K Thomas1, Leamarie T Gordon2, Paul M Cernasov1

  • 1Psychology Department, Tufts University, 490 Boston Avenue, Medford, MA 02155 USA.

Cognitive Research: Principles and Implications
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PubMed
Summary
This summary is machine-generated.

Interim testing initially increases misinformation susceptibility. However, with longer retention intervals, testing benefits eyewitness memory by reducing forgetting of original details.

Keywords:
Attention allocationMisinformationRepeated testingRetrieval enhanced suggestibility

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Area of Science:

  • Cognitive Psychology
  • Eyewitness Memory Research
  • Memory Distortion

Background:

  • The misinformation effect describes how post-event information can distort eyewitness recall.
  • Previous research indicates interim testing can amplify the misinformation effect.
  • Understanding factors influencing misinformation susceptibility is crucial for legal and forensic contexts.

Purpose of the Study:

  • To investigate how retention intervals affect misinformation susceptibility after interim testing.
  • To compare the effects of indirect (interim testing) versus direct (visual emphasis) elaboration on memory.
  • To examine the impact of interim testing and detail emphasis on original versus post-event learning.

Main Methods:

  • Two experiments compared three groups: interim testing, visually emphasized misinformation, and a control group.
  • Participants viewed an event, received post-event misinformation, and underwent a final memory test.
  • Experiment 1 involved a single session; Experiment 2 included a 48-hour retention interval before the final test.

Main Results:

  • In Experiment 1 (short interval), both interim testing and visual emphasis increased misinformation susceptibility.
  • In Experiment 2 (48-hour interval), interim testing significantly reduced misinformation susceptibility.
  • These findings suggest interim testing and detail emphasis influence the rate of forgetting original details.

Conclusions:

  • The impact of interim testing on misinformation susceptibility is moderated by retention interval length.
  • Longer retention intervals reveal the memory-enhancing benefits of testing, reducing susceptibility to misinformation.
  • Both interim testing and direct emphasis strategies affect the balance between original and post-event memory consolidation.