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Related Experiment Video

Updated: May 5, 2026

Using a Classroom-Based Deese Roediger McDermott Paradigm to Assess the Effects of Imagery on False Memories
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Additional boundary condition for list-method directed forgetting: the effect of presentation format.

Almut Hupbach1, Lili Sahakyan2

  • 1Department of Psychology, Lehigh University.

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Summary
This summary is machine-generated.

Directed forgetting effects occur only when new learning matches the format of previously studied material. Mismatched formats prevent forgetting, suggesting retrieval cues override forget instructions.

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Area of Science:

  • Cognitive Psychology
  • Memory Research
  • Neuroscience

Background:

  • Directed forgetting involves intentionally trying to forget information, making it harder to recall later.
  • This forgetting effect is typically observed when new learning follows the forget instruction.
  • The role of new material's format in directed forgetting remains unclear.

Purpose of the Study:

  • To investigate whether the format of new learning material influences the effectiveness of directed forgetting.
  • To determine if conceptual unrelatedness is sufficient for directed forgetting or if format matching is also required.

Main Methods:

  • Participants studied initial lists (L1) of either words or line drawings.
  • They then received instructions to either remember or forget L1 items.
  • A second list (L2) was presented, which was conceptually unrelated and either matched or mismatched L1's format.

Main Results:

  • Forgetting effects were significant only when L2's format matched L1's format.
  • When L1 and L2 formats mismatched, directed forgetting was not observed.
  • This indicates that format matching is a crucial condition for directed forgetting.

Conclusions:

  • The format of subsequent learning material is a critical boundary condition for directed forgetting.
  • Salient retrieval cues from matching formats may override the influence of "forget" cues.
  • Findings contribute to understanding memory control processes and directed forgetting theories.