title: Age differences in cognitive performance in later life: relationships to self-reported health and activity life style.
abstract: The predictive relationships among individual differences in self-reported physical health and activity life style and performance on an array of information processing and intellectual ability measures were examined. A sample of 484 men and women aged 55 to 86 years completed a battery of cognitive tasks measuring verbal processing time, working memory, vocabulary, verbal fluency, world knowledge, word recall, and text recall. Hierarchical regression was used to predict performance on these tasks from measures of self-reported physical health, alcohol and tobacco use, and level of participation in everyday activities. The results indicated: (a) individual differences in self-reported health and activity predicted performance on multiple cognitive measures; (b) self-reported health was more predictive of processing resource variables than knowledge-based abilities; (c) interaction effects indicated that participation in cognitively demanding activities was more highly related to performance on some measures for older adults than for middle-aged adults; and (d) age-related differences in performance on multiple measures were attenuated by partialing individual differences in self-reported health and activity.
authors.affiliation: Department of Psychology, University of Victoria.
authors.forename: D F
authors.initials: DF
authors.lastname: Hultsch
authors.forename: M
authors.initials: M
authors.lastname: Hammer
authors.forename: B J
authors.initials: BJ
authors.lastname: Small
mesh_terms: D000203:Activities of Daily Living; D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology* / Q000523:psychology; D000428:Alcohol Drinking; D002908:Chronic Disease; D003071:Cognition / Q000502:physiology*; D005260:Female; D006262:Health; D006801:Humans; D007802:Language; D008019:Life Style; D008297:Male; D008568:Memory; D011939:Mental Recall; D008875:Middle Aged; D004364:Pharmaceutical Preparations; D011932:Reading; D012649:Self Concept; D012907:Smoking; D013997:Time Factors; D014825:Vocabulary
chemical_list: D004364:Pharmaceutical Preparations