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Area of Science:

  • Cognitive Psychology
  • Neuroscience of Aging

Background:

  • Young and older adults exhibit different speed-accuracy trade-offs in sustained attention.
  • Older adults' accuracy preference may stem from higher intrinsic motivation to compensate for slower processing speed.

Purpose of the Study:

  • To investigate motivational differences influencing speed-accuracy strategies in young and older adults.
  • To examine how intrinsic and extrinsic motivation impact sustained attention performance across age groups.

Main Methods:

  • Employed the Sustained Attention to Response Task (SART) with matched accuracy via response window titration.
  • Administered monetary incentives to assess responsiveness to extrinsic motivation.
  • Measured baseline and incentive-driven motivation levels in both age groups.

Main Results:

  • Both groups achieved similar performance post-titration, indicating comparable strategies.
  • Monetary incentives significantly boosted accuracy in young adults more than in older adults.
  • Older adults reported higher baseline motivation but showed less improvement with monetary rewards.

Conclusions:

  • Older adults appear intrinsically motivated, performing well due to inherent drive.
  • Younger adults demonstrate greater performance enhancement in response to extrinsic (monetary) incentives.
  • Motivational differences, not just cognitive decline, underlie age-related strategy variations in sustained attention.