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Related Experiment Videos

A longitudinal study of implicit and explicit memory in old persons.

Debra A Fleischman1, Robert S Wilson, John D E Gabrieli

  • 1Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL 60612, USA. Debra_Fleischman@rush.edu

Psychology and Aging
|December 9, 2004
PubMed
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As people age, explicit memory declines, but implicit memory, or repetition priming, remains stable. This suggests age-related memory changes are not uniform across all memory types.

Area of Science:

  • Cognitive psychology
  • Neuroscience of aging
  • Human memory research

Background:

  • Explicit memory decline is common with aging.
  • The impact of aging on implicit memory (repetition priming) is less understood.
  • Previous research suggests mild priming reduction in older adults.

Purpose of the Study:

  • To investigate age-related changes in both explicit memory and implicit memory (repetition priming).
  • To determine if implicit memory remains stable or declines in older adults.
  • To assess the dissociability of age-related changes in explicit versus implicit memory.

Main Methods:

  • Longitudinal study design with annual data collection over 4 waves.
  • Inclusion of a large cohort of older adults without dementia at baseline.

Related Experiment Videos

  • Assessment of explicit memory and repetition priming using multiple tests.

    • Main Results:

    • Explicit memory showed a significant decline over the 4-year period.
    • Implicit memory, specifically repetition priming, remained stable across all participants.
    • Demonstrated a dissociation in age-related trajectories between explicit and implicit memory.

    Conclusions:

    • Age-related decline impacts explicit memory but not implicit memory (repetition priming).
    • Explicit memory and implicit memory exhibit distinct patterns of change with aging.
    • Reduced priming is not an inevitable consequence of the aging process.