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Related Experiment Videos

More on recognition and recall in amnesics.

W Hirst1, M K Johnson, E A Phelps

  • 1Department of Psychology, Graduate Faculty of the New School of Social Research, New York, New York 10003.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|October 1, 1988
PubMed
Summary

Amnesia selectively impairs memory recall but not recognition, even when task difficulty is equated. This study confirms that amnesic patients retain recognition abilities, highlighting a specific memory deficit.

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Area of Science:

  • Cognitive Neuroscience
  • Neuropsychology
  • Memory Research

Background:

  • Amnesia is characterized by memory impairments.
  • Previous research indicated preserved recognition in amnesic patients compared to recall deficits.

Purpose of the Study:

  • To extend and validate findings on the selective memory deficits in amnesic patients.
  • To investigate the generalizability of preserved recognition across different experimental paradigms.

Main Methods:

  • Two experiments were conducted to test amnesic and normal recognition and recall.
  • Experiment 1 equated recognition by adjusting retention intervals for controls.
  • Experiment 2 examined yes-no recognition tasks.

Main Results:

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  • Amnesic recall remained significantly worse than normal recall, even when recognition performance was equated.
  • Findings were consistent across different methods of equating recognition (exposure time and retention interval).
  • Yes-no recognition tasks also supported preserved recognition in amnesic patients.

Conclusions:

  • The direct memory deficit in amnesic patients is selective, primarily affecting recall.
  • Recognition memory appears relatively spared in amnesia, irrespective of the specific experimental paradigm used.
  • These results further delineate the nature of memory impairments in amnesia.