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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

Bielak, Allison; Cherbuin, Nicolas; Bunce, David; Anstey, Kaarin

Description

Moment-to-moment intraindividual variability (IIV) in cognitive speed is a sensitive behavioural 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 differences in IIV across adulthood using a large, neurologically normal, population-based sample evaluated thrice over 8 years. Multilevel modeling...[Show more]

CollectionsANU Research Publications
Date published: 2014-01
Type: Journal article
URI: http://hdl.handle.net/1885/11390
Source: Developmental Psychology 50.1 (2014): 143-151
DOI: 10.1037/a0032650

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