| Title | Cross-sectional and longitudinal relationships among age, cognition, and processing speed. |
| Publication Type | Journal Article |
| Year of Publication | 1999 |
| Authors | Sliwinski, M, Buschke, H |
| Journal | Psychol Aging |
| Volume | 14 |
| Issue | 1 |
| Pagination | 18-33 |
| Date Published | 1999 Mar |
| ISSN | 0882-7974 |
| Keywords | Age Factors, Aged, Aged, 80 and over, Aging, Cognition, Cross-Sectional Studies, Female, Forecasting, Humans, Likelihood Functions, Linear Models, Longitudinal Studies, Male, Models, Psychological, Neuropsychological Tests, Reaction Time, Time Factors |
| Abstract | <p>Cross-sectional and longitudinal age effects on cognitive function were examined in 302 older adults followed longitudinally. Processing speed was related to cognitive performance at cross-section, and change in speed predicted within-person longitudinal cognitive decline. Statistical control of processing speed greatly reduced cross-sectional age effects but did not attenuate longitudinal aging effects. This difference in processing speed's ability to account for cross-sectional and longitudinal age effects is discussed in the context of theories of cognitive aging and methodological and statistical issues pertaining to the cross-sectional and longitudinal study of cognitive aging.</p> |
| DOI | 10.1037//0882-7974.14.1.18 |
| Alternate Journal | Psychol Aging |
| PubMed ID | 10224629 |
| Grant List | AGO3949 / AG / NIA NIH HHS / United States HD-01799 / HD / NICHD NIH HHS / United States R29 AG12448 / AG / NIA NIH HHS / United States |