Does activity engagement protect against cognitive decline in old age? Methodological and analytical considerations.
The literature about relationships between activity engagement and cognitive performance is abundant yet inconclusive. Some studies report that higher activity engagement leads to lower cognitive decline; others report no functional links, or that higher cognitive performance leads to less decline in activity engagement. We first discuss some methodological and analytical features that may contribute to the divergent findings. We then apply a longitudinal dynamic structural equation model to five repeated measurements of the Swiss Interdisciplinary Longitudinal Study on the Oldest Old. Performance on perceptual speed and verbal fluency tasks was analyzed in relation to six different activity composite scores. Results suggest that increased media and leisure activity engagement may lessen decline in perceptual speed, but not in verbal fluency or performance, whereas cognitive performance does not effect change in activity engagement.
Ghisletta
Paolo
P
Center for Interdisciplinary Gerontology and Faculty of Psychology and Educational Sciences, University of Geneva, Route de Mon-Idée 59, 1226 Thônex, Geneva, Switzerland. paolo.ghisletta@cig.unige.ch
Bickel
Jean-François
JF
Lövdén
Martin
M
D000203:Activities of Daily Living / Q000145:classification* / Q000523:psychology; D000368:Aged; D000369:Aged, 80 and over; D003072:Cognition Disorders / Q000453:epidemiology / Q000517:prevention & control* / Q000523:psychology; D005260:Female; D006304:Health Status; D006801:Humans; D007899:Leisure Activities; D008019:Life Style; D008137:Longitudinal Studies; D008297:Male; D008402:Mass Media; D015233:Models, Statistical; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D013223:Statistics as Topic