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Researchers Share Discoveries About Aging-Related Changes in Health and Cognition

Critical life course events and experiences — in both youth and middle adulthood — may contribute to health and cognition in later life, according to a new supplemental issue of the Journals of Gerontology Series B: Psychological Sciences and Social Sciences. Furthermore, the authors find that the processes of aging linked to cognition and those linked to health should be studied simultaneously, as part of the same set of processes.

There also is an emerging consensus that a multidisciplinary theoretical approach is necessary to understand the nature of the processes of cognitive aging. Thus, the studies presented in the issue represent the work of scholars in the areas of biology, epidemiology, demography, developmental psychology, gerontology, neuropsychology, and sociology.

“Knowledge of the relationship of aging to health and cognitive function is crucial to the understanding of the linkages between age-related socioeconomic, racial/ethnic, gender, and health disparities,” state Guest Editors Duane F. Alwin, PhD, and Scott M. Hofer, PhD.

Among the issue’s findings:

For many cognitive abilities, the declines associated with aging do not manifest themselves until after age 75.

High school class rank has a much larger effect than on survival than IQ across the lifespan.

The progressive substitution of mechanical power for human physical activity is undermining the physical fitness needed to preserve cognitive function.

Greater social contact and support are associated with better cognitive functioning, whereas greater conflict is associated with lower cognitive functioning.

Diseases either caused by or associated with aging — particularly vascular changes — play a larger role in age-related cognitive changes than is often acknowledged.

This collection of articles, titled “Cognition, Health, and Aging: Integrating Perspectives Across Disciplines,” is based on papers presented at a conference held at Penn State University in 2009. Funding for the supplemental issue was provided by the National Institute on Aging through the resources of the Center on Population Health and Aging at Penn State University, and the National Academies Keck Futures Initiative grant, Health and Healthspan in Longitudinal Studies of Aging.

The Journals of Gerontology Series B: Psychological Sciences and Social Sciences is a refereed publication of The Gerontological Society of America (GSA), the nation's oldest and largest interdisciplinary organization devoted to research, education, and practice in the field of aging. The principal mission of the Society — and its 5,400+ members — is to advance the study of aging and disseminate information among scientists, decision makers, and the general public. GSA’s structure also includes a policy institute, the National Academy on an Aging Society, and an educational branch, the Association for Gerontology in Higher Education.

Todd Kluss | EurekAlert!
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