TitleCorrelated and coupled cognitive change in older adults with and without preclinical dementia.
Publication TypeJournal Article
Year of Publication2003
AuthorsSliwinski, MJ, Hofer, SM, Hall, C
JournalPsychol Aging
Date Published2003 Dec
KeywordsAged, Aged, 80 and over, Aging, Cognition Disorders, Dementia, Female, Humans, Longitudinal Studies, Male

<p>Common factor aging theories state that correlations among cognitive age effects signify a single underlying causal process. The logic underlying this proposition was evaluated by examining correlated cognitive change in a sample of 391 initially nondemented older adults who were tested annually for up to 16 years. Between-person correlations among rates of change (range = .56-.61) were partly attributable to model misspecification and the aggregation of heterogeneous groups of individuals. Correlated within-person cognitive change was much stronger in the cases (.45-.51) than in the noncases (.07-.18). These results demonstrate that correlated change may either signify causal commonality or the cumulative effects of multiple age-related conditions that can affect multiple cognitive systems.</p>

Alternate JournalPsychol Aging
PubMed ID14692856
Grant ListAG12448 / AG / NIA NIH HHS / United States
AGO3949 / AG / NIA NIH HHS / United States