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University of Southern California Repeatable Episodic Memory Test

E S Parker1, E M Eaton, S C Whipple

  • 1Center for Neuropsychology, Irvine, California.

Journal of Clinical and Experimental Neuropsychology
|December 1, 1995
PubMed
Summary

The University of Southern California Repeatable Episodic Memory Test (USC-REMT) is a brief memory assay for clinical trials. It effectively measures memory decrements and subjective organization in HIV-1 patients without significant practice effects.

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Area of Science:

  • Neuroscience
  • Psychology
  • Clinical Trials

Background:

  • Clinical drug trials require memory assessments sensitive to repeated testing.
  • Subjective organization is a cognitive strategy potentially affected by frontal lobe dysfunction and HIV.
  • Existing memory tests may be affected by practice effects over repeated administrations.

Purpose of the Study:

  • To introduce the University of Southern California Repeatable Episodic Memory Test (USC-REMT) as a brief, repeatable memory assay.
  • To evaluate the USC-REMT's sensitivity to memory decrements in clinical populations.
  • To assess the USC-REMT's utility in measuring subjective organization and its resistance to practice effects.

Main Methods:

  • The USC-REMT utilizes seven lists of 15 semantically unrelated, high-frequency nouns.

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  • Participants complete three study-test trials with words presented in varying orders.
  • Recall is scored for global mnemonic efficiency, primary/secondary memory, subjective organization, recall consistency, and serial position effects.

    • Main Results:

    • HIV-1 seropositive men recalled fewer words and showed less subjective organization than controls.
    • The USC-REMT demonstrated sensitivity to memory decrements.
    • No significant practice effects were observed over the first three administrations of the test.

    Conclusions:

    • The USC-REMT is a brief, reliable memory assessment tool suitable for longitudinal clinical studies.
    • The test is sensitive to memory deficits associated with HIV-1 infection.
    • The USC-REMT complements existing verbal memory tasks and is minimally affected by repeated testing.