Application of the diffusion model to two-choice tasks for adults 75-90 years old.

Roger Ratcliff · Anjali Thapar · Gail McKoon

107 citations0/0 files storedPsychology and Aging

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Aging and Gerontology Research Neural and Behavioral Psychology Studies Cognitive Abilities and Testing

Abstract

The effects of aging on simple 2-choice decision making was investigated with the diffusion model (R. Ratcliff, 1978). Data for 75- to 90-year-olds were collected and compared with previous data from 60- to 75-year-olds and college students for 5 tasks: a signal detection-like task, letter and brightness discrimination with masking, recognition memory, and lexical decision. The model fit the data well and therefore allows components of processing to be examined as a function of age. Compared with decision-making processes in college students, decision criteria and nondecision components of processing increased with participants' age. However, the quality of the evidence on which decisions were based decreased with age only for letter and brightness discrimination.

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References

1977The CES-D Scale 2015Older Adults' Reasons for Using Technology while Aging in Place 1996The processing-speed theory of adult age differences in cognition.2001Wechsler Adult Intelligence Scale-III 1992The handbook of aging and cognition 2007Wechsler Adult Intelligence Scale 2003New Frontiers in the Future of Aging: From Successful Aging of the Young Old to the Dilemmas of the Fourth Age 2002Estimating parameters of the diffusion model: Approaches to dealing with contaminant reaction times and parameter variability

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