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Related Experiment Videos

Walking while memorizing: age-related differences in compensatory behavior.

K Z Li1, U Lindenberger, A M Freund

  • 1Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany. kli@vax2.concordia.ca

Psychological Science
|July 5, 2001
PubMed
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Older adults prioritize essential sensorimotor tasks over cognitive ones when facing dual-task challenges, utilizing external aids to optimize performance in aging.

Area of Science:

  • Gerontology
  • Cognitive Psychology
  • Human Factors

Background:

  • The life-span theory of selection, optimization, and compensation (SOC) provides a framework for understanding how individuals adapt to age-related changes.
  • Dual-task performance, involving the simultaneous execution of two tasks, is a common measure to assess cognitive and sensorimotor functioning, particularly in aging research.

Purpose of the Study:

  • To investigate age-related differences in task prioritization during dual-task performance.
  • To examine how younger and older adults employ compensatory strategies, including the use of external aids, to manage competing demands.
  • To test predictions derived from the SOC theory regarding adaptation in aging.

Main Methods:

  • Participants (younger and older adults) performed cognitive (memorizing) and sensorimotor (walking) tasks individually and concurrently.

Related Experiment Videos

  • Task difficulty was manipulated, and performance costs were assessed.
  • The use of external aids was measured as an indicator of task priority.

    • Main Results:

    • Dual-task costs were more pronounced for memory performance than for walking, suggesting older adults prioritized the sensorimotor task.
    • When offered external aids, older adults optimized their walking performance, while younger adults optimized their memory performance.
    • Training with tasks and aids ensured participants were familiar with the demands.

    Conclusions:

    • Older adults exhibit a prioritization of sensorimotor over cognitive tasks under dual-task conditions, aligning with SOC theory's emphasis on maintaining essential functions.
    • The strategic use of external aids differs between age groups, with older adults employing them to support core functions and younger adults to enhance cognitive gains.
    • Findings have implications for understanding cognitive and sensorimotor aging, and the role of assistive technologies and environmental supports for older populations.