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Related Experiment Videos

Is the age-complexity effect mediated by reductions in a general processing resource?

T R Bashore1, M W van der Molen, K R Ridderinkhof

  • 1Department of Psychology, University of Northern Colorado, Greeley 80639, USA. ubasho@bentley.univnorthco.edu

Biological Psychology
|March 21, 1997
PubMed
Summary
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Information processing speed slows with age, particularly with increased complexity. This study argues age-related slowing is task-specific, not a general decline in processing resources.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Gerontology

Background:

  • Aging is associated with a decline in information processing speed, often measured by reaction time.
  • This age-related slowing is typically most pronounced as task complexity increases, a phenomenon known as the Age-Complexity effect.
  • Current theories often attribute this slowing to generalized reductions in processing speed or a general processing resource.

Purpose of the Study:

  • To challenge the prevailing view that age-related slowing of information processing is generalized and task-independent.
  • To propose that age-induced slowing is instead task-dependent and process-specific.
  • To offer an alternative explanation for age-related cognitive slowing, moving beyond the concept of a diminished general processing resource.

Main Methods:

Related Experiment Videos

  • Review of existing behavioral studies examining age differences in information processing.
  • Analysis of chronopsychophysiological studies investigating the neural correlates of cognitive aging.
  • Synthesis of converging evidence from multiple research methodologies.

Main Results:

  • Evidence suggests that age-related slowing in information processing is not uniform across all tasks and processes.
  • The degree of slowing varies depending on the specific task demands and the cognitive processes involved.
  • Findings contradict the hypothesis of a generalized decline in processing speed or a single, diminished processing resource.

Conclusions:

  • The age-related slowing of information processing is task-dependent and process-specific.
  • The Age-Complexity effect cannot be adequately explained by reductions in a general processing resource.
  • Elements of age-induced cognitive slowing may be better understood through a cognitive-energetical model.