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Validation of a Dynamic Measure of Current Cognitive Reserve in a Longitudinally Assessed Sample of Healthy Older Adults.

Summers, MJ and Thow, ME and Ward, DD and Saunders, NL and Klekociuk, SZ and Imlach, A-R and Summers, JJ and Vickers, JC (2017) Validation of a Dynamic Measure of Current Cognitive Reserve in a Longitudinally Assessed Sample of Healthy Older Adults. Assessment. ISSN 1552-3489

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Abstract

Cognitive reserve (CR) is a theoretical construct describing the underlying cognitive capacity of an individual that confers differential levels of resistance to, and recovery from, brain injuries of various types. To date, estimates of an individual's level of CR have been based on single proxy measures that are retrospective and static in nature. To develop a measure of dynamic change in CR across a lifetime, we previously identified a latent factor, derived from an exploratory factor analysis of a large sample of healthy older adults, as current CR (cCR). In the present study, we examined the longitudinal results of a sample of 272 older adults enrolled in the Tasmanian Healthy Brain Project. Using results from 12-month and 24-month reassessments, we examined the longitudinal validity of the cCR factor using confirmatory factor analyses. The results of these analyses indicate that the cCR factor structure is longitudinally stable. These results, in conjunction with recent results from our group demonstrating dynamic increases in cCR over time in older adults undertaking further education, lend weight to this cCR measure being a valid estimate of dynamic change in CR over time.

Item Type: Article
Uncontrolled Keywords: 1701 Psychology, 1503 Business And Management
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Sport & Exercise Sciences
Publisher: Sage Publications
Related URLs:
Date Deposited: 16 Jan 2017 11:32
Last Modified: 09 Sep 2017 21:31
DOI or Identification number: 10.1177/1073191116685806
URI: http://researchonline.ljmu.ac.uk/id/eprint/5258

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