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Related Experiment Video

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The Deese-Roediger-McDermott (DRM) Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory
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Evidence for a memory threshold in second-choice recognition memory responses.

Colleen M Parks1, Andrew P Yonelinas

  • 1Psychology Department, University of Nevada, Las Vegas, NV 89154-5030, USA.

Proceedings of the National Academy of Sciences of the United States of America
|July 1, 2009
PubMed
Summary
This summary is machine-generated.

Memory strength may not be continuous. This study used a novel 4-alternative forced-choice test, revealing distinct recognition processes for items versus associations, supporting dual-process memory models.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • The nature of memory strength (continuous vs. threshold) is a fundamental cognitive question.
  • Previous research relied solely on receiver operating characteristics (ROC) analysis.
  • A novel approach was needed to investigate memory strength variations.

Purpose of the Study:

  • To investigate whether memory strength is continuous or operates on a threshold.
  • To differentiate memory processes for single items versus associations.
  • To test predictions of dual-process memory models.

Main Methods:

  • Employed a 4-alternative forced-choice (4-AFC) recognition test.
  • Subjects made either a single choice or a first and second choice.
  • Tested memory for single items and arbitrary word-pair associations.

Main Results:

  • Item recognition showed a direct relationship between single and second choices, supporting continuous memory strength.
  • Associative recognition revealed unrelated single and second choices, aligning with threshold theories.
  • Encoding word pairs as compound words shifted associative recognition towards a continuous strength process.

Conclusions:

  • Memory models incorporating both continuous familiarity and threshold recollection processes are supported.
  • Distinguishes between item and associative memory mechanisms.
  • Suggests encoding strategies can influence the underlying memory process.