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Aging and confidence judgments in item recognition.

Chelsea Voskuilen1, Roger Ratcliff1, Gail McKoon1

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Summary
This summary is machine-generated.

Aging affects memory performance, with older adults showing slower response times (RTs) and a slight bias in item recognition. These differences are mainly due to decision-making processes, not memory strength.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience of Aging

Background:

  • Aging impacts cognitive functions, including memory and decision-making.
  • Understanding age-related changes in memory performance is crucial for cognitive health research.

Purpose of the Study:

  • To investigate the effects of aging on item-recognition performance using confidence judgments.
  • To apply the Ratcliff & Starns (2013) model to differentiate memory and decision components in older adults' performance.

Main Methods:

  • Utilized an item-recognition experiment with confidence judgments.
  • Applied a computational model (RTCON2) to analyze response time (RT) distributions and confidence ratings.
  • Compared data from a sample of older adults with previously reported data from younger adults.

Main Results:

  • Older adults exhibited longer response times (RTs) compared to younger adults.
  • Older adults showed a minor reduction in memory evidence strength and a slight bias towards judging items as 'old'.
  • The difference in RTs between age groups was primarily attributed to the non-decision component.

Conclusions:

  • The findings suggest aging influences both memory evidence and decision-making processes.
  • The study demonstrates the applicability of the RTCON2 model to older adults' cognitive performance data.
  • Results align with existing research on aging effects in RT and response-signal tasks, though tentative due to sample size.