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Contribution Details

Type Journal Article
Scope Discipline-based scholarship
Title Older adults process the probability of winning sooner but weigh it less during lottery decisions
Organization Unit
Authors
  • Hsiang-Yu Chen
  • Gaia Lombardi
  • Shu-Chen Li
  • Todd Anthony Hare
Item Subtype Original Work
Refereed Yes
Status Published in final form
Language
  • English
Journal Title Scientific Reports
Publisher Nature Publishing Group
Geographical Reach international
ISSN 2045-2322
Volume 12
Page Range 11381
Date 2022
Abstract Text Empirical evidence has shown that visually enhancing the saliency of reward probabilities can ease the cognitive demands of value comparisons and improve value-based decisions in old age. In the present study, we used a time-varying drift diffusion model that includes starting time parameters to better understand (1) how increasing the saliency of reward probabilities may affect the dynamics of value-based decision-making and (2) how these effects may interact with age. We examined choices made by younger and older adults in a mixed lottery choice task. On a subset of trials, we used a color-coding scheme to highlight the saliency of reward probabilities, which served as a decision-aid. The results showed that, in control trials, older adults started to consider probability relative to magnitude information sooner than younger adults, but that their evidence accumulation processes were less sensitive to reward probabilities than that of younger adults. This may indicate a noisier and more stochastic information accumulation process during value-based decisions in old age. The decision-aid increased the influence of probability information on evidence accumulation rates in both age groups, but did not alter the relative timing of accumulation for probability versus magnitude in either group.
Free access at DOI
Digital Object Identifier 10.1038/s41598-022-15432-y
Other Identification Number merlin-id:22614
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Keywords Multidisciplinary