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Related Experiment Videos

Testing global memory models using ROC curves.

R Ratcliff1, C F Sheu, S D Gronlund

  • 1Psychology Department, Northwestern University, Evanston, Illinois 60208.

Psychological Review
|July 1, 1992
PubMed
Summary
This summary is machine-generated.

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Global memory models face challenges as recognition memory experiments reveal new item familiarity standard deviations are 0.8 that of old items. This finding contradicts current models, necessitating revisions or new developments in memory research.

Area of Science:

  • Cognitive psychology
  • Computational neuroscience
  • Memory research

Background:

  • Global memory models are essential for understanding recognition memory.
  • These models output a familiarity value when matching test items against memory.

Purpose of the Study:

  • To evaluate global memory models using recognition memory experiment data.
  • To assess the consistency of experimental findings with model predictions regarding familiarity distributions.

Main Methods:

  • Utilizing data from recognition memory experiments.
  • Analyzing receiver operating characteristic (ROC) curves to determine standard deviations of familiarity for old and new items.
  • Assuming normal distributions for familiarity values.

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Main Results:

  • Experimental results align with the models' prediction of normal familiarity distributions.
  • A key finding is that the new-item familiarity standard deviation is approximately 0.8 of the old-item standard deviation.
  • This ratio is independent of old item strength, contradicting model predictions.

Conclusions:

  • Current global memory models are inconsistent with empirical data on familiarity standard deviations.
  • The findings suggest a need for revising existing models or developing novel ones to better account for recognition memory processes.