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Historical Processes and Patterns of Cognitive Aging
Historical processes and patterns of cognitive aging

In this chapter I comment on some of the historical influences that contribute to the marked cohort and generational differences in levels and trajectories of cognitive abilities that have been observed over the past century. I then use data from the Seattle Longitudinal Study (SLS; Schaie, 2005) to show how changes in educational attainment and occupational status have served as mediating variables for these changes.

Because I have investigated these processes primarily in a normal community-dwelling population sample, I need to begin by dealing with a number of definitional issues. First, I want to be specific in distinguishing between different forms of aging that can be found in the literature (cf. Schaie, 2006). ...

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