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Related Experiment Videos

Complex semantic processing in old age: does it stay or does it go?

U Mayr1, R Kliegl

  • 1Department of Psychology, University of Potsdam, Germany. mayr@rz.uni-potsdam.de

Psychology and Aging
|February 7, 2001
PubMed
Summary
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Older adults show subtle age-related declines in executive control, not core semantic retrieval speed. Set-switching abilities remain relatively intact, suggesting domain-specific age effects.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Gerontology

Background:

  • Semantic fluency tasks assess the speed of accessing and producing words from specific categories.
  • Age-related cognitive changes can impact various aspects of language production and executive functions.
  • Understanding domain-specific versus general age-related cognitive decline is crucial for effective interventions.

Purpose of the Study:

  • To investigate age differences in semantic fluency retrieval speed, particularly in a set-switching paradigm.
  • To differentiate between age effects on semantic access and nonsemantic processing components.
  • To explore the role of executive control in age-related differences in semantic retrieval.

Main Methods:

  • Participants included young and older adults (N=24 each).

Related Experiment Videos

  • Semantic fluency was assessed under standard and set-switching conditions (alternating between two categories).
  • Retrieval-position function parameters were used to analyze semantic access speed, controlling for nonsemantic factors.

    • Main Results:

    • Age effects were observed in nonsemantic processing components, not in the speed of semantic retrieval itself.
    • Age-related deficits in the set-switching condition were found to be relatively subtle.
    • The findings suggest that executive control plays a role in age differences during semantic retrieval.

    Conclusions:

    • Age-related cognitive decline may be domain-specific, impacting executive functions more than core semantic retrieval.
    • Executive control deficits in older adults might manifest subtly in complex tasks like set-switching.
    • Further research is needed to fully understand the interplay between executive control and semantic retrieval across the lifespan.