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Related Experiment Videos

Memory dissociation and metamemory in multiple sclerosis.

M Scarrabelotti1, M Carroll

  • 1Department of Psychology, The Canberra Hospital, Woden, ACT, Australia. aequumpl@ozemail.com.au

Neuropsychologia
|December 22, 1999
PubMed
Summary

Memory impairment in Multiple Sclerosis (MS) emerges over time, particularly affecting conscious processing and metamemory. Automatic memory functions remain intact, but conscious cognitive tasks decline.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Previous research established Jacoby's process dissociation procedure for memory assessment.
  • The initial study investigated memory function and metamemory in Multiple Sclerosis (MS) using this procedure.

Purpose of the Study:

  • To longitudinally assess memory function and metamemory in MS patients compared to controls.
  • To investigate the role of conscious versus automatic processing in memory performance over time in MS.

Main Methods:

  • A longitudinal study using Jacoby's process dissociation procedure with word stem completion tasks.
  • Administered the California Verbal Learning Test (CVLT), Stroop, and Reitan's Word Finding Test (WFT) to assess conscious processing.
  • Metamemory judgments were collected regarding recall performance under inclusion and exclusion instructions.

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Main Results:

  • No group differences in memory or metamemory at year one.
  • By year two, MS subjects showed reduced word recall and conscious processing, while automatic memory remained similar to controls.
  • Reduced conscious processing in MS correlated with poorer performance on Stroop, WFT, and CVLT recall.

Conclusions:

  • Automatic memory processing appears intact in Multiple Sclerosis.
  • Impairments in memory, metamemory, and other cognitive functions become apparent over time in MS, especially when conscious processing is required.
  • The findings highlight a progressive decline in conscious cognitive abilities in MS.