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Task specificity in age-related slowing: word production versus conceptual comparison.

G Doose1, P Feyereisen

  • 1Department of Experimental Psychology, Catholic University of Louvain at Louvain-la-Neuve, Belgium. doose@neco.ucl.ac.be

The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
|March 14, 2001
PubMed
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Older adults do not necessarily show greater age-related slowing in complex comparison tasks compared to simpler production tasks. However, response modality affects older and younger adults differently in comparison tasks.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Aging Research

Background:

  • Age-related cognitive decline is often characterized by slowing reaction times.
  • Previous research suggests task complexity may differentially affect cognitive processing speed across the lifespan.

Purpose of the Study:

  • To investigate age-related slowing across different cognitive tasks and response modalities.
  • To examine whether comparison tasks elicit greater age-related slowing than production tasks.

Main Methods:

  • Participants: 29 younger (mean age 22) and 30 older adults (mean age 70).
  • Tasks: Conceptual comparison, naming, and simple reaction time tasks.
  • Response Modalities: Vocal and manual responses were recorded.

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Main Results:

  • No significant difference in age-related slowing between comparison and production tasks.
  • An interaction between age and response modality was observed in the conceptual comparison task: younger adults were faster with manual responses, while older adults were faster with vocal responses.
  • Manual responses were faster in both age groups for the simple reaction time task.

Conclusions:

  • Age-related slowing is not uniformly greater in comparison tasks versus production tasks.
  • The modality of response interacts with age, influencing performance in complex cognitive tasks.
  • Findings inform models of age-related cognitive slowing, suggesting task-specific and modality-specific factors are crucial.