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A scoring method for logical memory that is sensitive to right-hemispheric dysfunction.

J S Webster1, M C Godlewski, G L Hanley

  • 1Department of Veterans Affairs Medical Center, Long Beach, CA 90822.

Journal of Clinical and Experimental Neuropsychology
|March 1, 1992
PubMed
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This study introduces a new scoring system for memory tests. Right-brain stroke patients showed impaired recall of details and increased errors, unlike left-brain stroke patients.

Area of Science:

  • Neuroscience
  • Psychology
  • Cognitive Science

Background:

  • The Wechsler Memory Scale (WMS) Logical Memory subtest assesses verbal recall.
  • Existing scoring methods may not fully capture memory processing deficits after stroke.
  • A novel scoring system is needed to differentiate cognitive impairments.

Purpose of the Study:

  • To develop and validate a relationally processing-based scoring system (RPSS) for the WMS Logical Memory subtest.
  • To investigate memory recall differences between normal controls, right cerebrovascular accident (R-CVA), and left cerebrovascular accident (L-CVA) groups using the RPSS.

Main Methods:

  • Developed the RPSS to categorize recalled information into Essential propositions, Detail propositions, and Self-Generated propositions (intrusions).

Related Experiment Videos

  • Compared performance of 20 normal controls, 20 R-CVA patients, and 20 L-CVA patients on the WMS Logical Memory subtest using the RPSS.
  • Utilized ANOVAs to analyze differences in proposition recall and intrusion errors between groups.

    • Main Results:

    • The R-CVA group recalled significantly fewer Detail propositions and produced more Self-Generated propositions compared to controls.
    • Essential proposition recall was similar between R-CVA and control groups.
    • The L-CVA group recalled fewer Essential propositions but had the fewest intrusion errors.

    Conclusions:

    • The RPSS effectively differentiates memory processing deficits associated with right cerebrovascular accidents.
    • Right-hemisphere damage impacts recall of non-essential details and increases confabulation.
    • Left-hemisphere damage may affect recall of core story elements, with fewer self-generated errors.