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Related Experiment Videos

Effects of aging and task difficulty on divided attention performance.

Joan M McDowd1, Fergus I M Craik

  • 1U Southern California, Los Angeles.

Journal of Experimental Psychology. Human Perception and Performance
|May 1, 1988
PubMed
Summary
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Older adults show performance declines on complex perceptual-motor tasks. While divided attention (DA) isn

Area of Science:

  • Cognitive Psychology
  • Human Aging Research
  • Perceptual-Motor Performance

Background:

  • Previous research indicated older adults are significantly impaired by divided attention (DA) tasks.
  • Recent studies have questioned the broad applicability of these findings.
  • The current study examines how task difficulty influences age-related DA deficits.

Purpose of the Study:

  • To investigate if age differences in dual-task performance are amplified by increased task difficulty.
  • To explore how manipulating cognitive load and choice complexity affects performance in young and older adults.

Main Methods:

  • Two experiments were conducted comparing young and older adults' performance on perceptual-motor tasks.
  • Task difficulty was systematically increased by altering cognitive demands (Experiment 1) and choice complexity (Experiment 2).

Related Experiment Videos

Main Results:

  • A significant age-related decrement in divided attention performance was observed.
  • Contrary to hypotheses, DA did not present unique challenges for older adults.
  • Increased overall task complexity, regardless of the method (DA or other), exaggerated age differences.

Conclusions:

  • Divided attention is not inherently more difficult for older adults than other complexity-increasing factors.
  • Age-related performance differences are exacerbated by general increases in task complexity.
  • Future research should consider overall task complexity rather than focusing solely on divided attention when examining age effects.