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Centre for Policy on Ageing | |
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| An analysis of diversity in the cognitive performance of elderly community dwellers: individual difference in change scores as a function of age | | Author(s) | Helen Christensen, A J Mackinnon, A E Korten |
| Journal title | Psychology and Aging, vol 14, no 3, September 1999 |
| Pages | pp 365-379 |
| Keywords | Cognitive processes ; Memory and Reminiscence ; Mental speed ; Living in the community ; Longitudinal surveys ; Australia. |
| Annotation | This Australian longitudinal study investigated whether age is associated with increases in interindividual variability across four ability domains using a sample of 426 community-dwelling older people followed over 3.5 years. Interindividual variability in change scores increased with age for memory, spatial functioning, and speed, but not for crystallised intelligence for the full sample and in a subsample that excluded dementia or probable dementia cases. Hierarchical regression analyses indicated that being female, having weaker muscle strength, and having greater symptoms of illness and greater depression were associated with overall greater variability in cognitive scores. Having a higher level of education was associated with reduced variability. These findings are consistent with the view that there is a greater range of responses at older ages, that certain domains of intelligence are less susceptible to variation than others and that variables other than age affect cognitive performance in later life. (AKM). |
| Accession Number | CPA-000114228 A |
| Classmark | DA: DB: DG: K4: 3J: 7YA |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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