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Centre for Policy on Ageing | |
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Normal aging and executive functions in "old-old" community dwellers
— poor performance is not an inevitable outcome | | Author(s) | Oliver Piguet, David A Grayson, G Anthony Broe |
| Journal title | International Psychogeriatrics, vol 14, no 2, June 2002 |
| Pages | pp 139-160 |
| Keywords | Mental ageing ; Cognitive processes ; Dementia ; Living in the community ; Octogenarians ; Performance ; Australia. |
| Annotation | 123 older people aged 81+ from the original 1991 Sydney Older Persons Study took part in this study. Nine executive function (EF) tests were administered to this sample, with the view to determine the effect of age on performance. Multiple linear regression analyses revealed the greatest contributor to EF scores from the markers of Alzheimer's disease (AD) and estimated IQ, but not from the markers of vascular dementia (VaD) and extrapyramidal (EP) related dementia or from age. These findings suggest that chronological age acts as a proxy variable mediating the impact of other factors such as subclinical signs of neurodegenerative disorders, and that it has little independent contribution to make. The study demonstrates that cognitive decline is not an ineluctable process that is associated with "normal" ageing, but rather represents in many cases, a by-product of neurodegenerative disorders, albeit themselves highly age-related. (RH). |
| Accession Number | CPA-021118206 A |
| Classmark | D6: DA: EA: K4: BBM: 5H: 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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