Like cognitive function, decision making across the life span shows profound age-related changes

Agnieszka Tymula, Lior A.Rosenberg Belmaker, Lital Ruderman, Paul W. Glimcher, Ifat Levy

Research output: Contribution to journalArticle

Abstract

It has long been known that human cognitive function improves through young adulthood and then declines across the later life span. Here we examined how decision-making function changes across the life span by measuring risk and ambiguity attitudes in the gain and loss domains, as well as choice consistency, in an urban cohort ranging in age from 12 to 90 y. We identified several important age-related patterns in decision making under uncertainty: First, we found that healthy elders between the ages of 65 and 90 were strikingly inconsistent in their choices compared with younger subjects. Just as elders show profound declines in cognitive function, they also show profound declines in choice rationality compared with their younger peers. Second, we found that the widely documented phenomenon of ambiguity aversion is specific to the gain domain and does not occur in the loss domain, except for a slight effect in older adults. Finally, extending an earlier report by our group, we found that risk attitudes across the life span show an inverted U-shaped function; both elders and adolescents are more risk-averse than their midlife counterparts. Taken together, these characterizations of decision-making function across the life span in this urban cohort strengthen the conclusions of previous reports suggesting a profound impact of aging on cognitive function in this domain.

Original languageEnglish (US)
Pages (from-to)17143-17148
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume110
Issue number42
DOIs
StatePublished - Oct 15 2013

ASJC Scopus subject areas

  • General

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