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Intraindividual Variability Is a Fundamental Phenomenon of Aging: Evidence from an 8-Year Longitudinal Study across Young, Middle, and Older Adulthood
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Bielak, Allison A. M.; Cherbuin, Nicolas; Bunce, David; Anstey, Kaarin J. – Developmental Psychology, 2014
Moment-to-moment intraindividual variability (IIV) in cognitive speed is a sensitive behavioral indicator of the integrity of the aging brain and brain damage, but little information is known about how IIV changes from being relatively low in young adulthood to substantially higher in older adulthood. We evaluated possible age group, sex, and task…
Descriptors: Foreign Countries, Aging (Individuals), Cognitive Processes, Reaction Time