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- Eriksson, Johannes, et al.
(författare)
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Probing growth defects inside nanowires
- 2006
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Ingår i: Book of abstracts: Intl Conf on Nanosci and Technol, Basel, Switzerland (2006).
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Konferensbidrag (refereegranskat)
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- Johansson, Boo, et al.
(författare)
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Cognitive abilities in late life, proximity to death and distance from birth
- 2006
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Ingår i: Cognitive abilities in late life, proximity to death and distance from birth. Paper presented at the 18th Nordic Congress in Gerontology, Jyväskylä, Finland..
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Konferensbidrag (refereegranskat)abstract
- Intra-individual change and continuity in cognitive abilities were examined as a conditional function of distance from birth (chronological age) and death in two Swedish population-based samples drawn from the H70 (70+; age-homogenous design) and the OCTO Twin (80+; age-heterogeneous design) studies. Examined cognitive domains included mental speed, memory, fluid, and crystallized abilities Three alternative time-based modelling approaches were used to fit the data a) an age-related approach b) a time-to–death-related approach, and c) a dual time structure component ap-proach including both age- and death-related time components. The death-related time structure accounts better for the data and age-related changes were largely attenuated when accounting for death-related changes, but death-related changes were relatively unaffected by the age-related sources of variance. The results emphasize that the reliance on age as a basic time structure in cognitive aging re-search can be doubtful and the importance of identifying diseases, co-morbidity and other health-related factors that account for cognitive decline in later life. Future studies need to identify and evaluate more specifically the time-related processes that increase the likelihood of death and produce decline in brain and cognitive functioning in later life.
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