Previous Chapter Chapter 17: Cognitive Change as Conditional on Age Heterogeneity in Onset of Mortality-Related Processes and Repeated Testing Effects Next Chapter

Valgeir Thorvaldsson, Scott M. Hofer, Linda B. Hassing & Boo Johansson

In: Handbook of Cognitive Aging: Interdisciplinary Perspectives

Chapter 17: Cognitive Change as Conditional on Age Heterogeneity in Onset of Mortality-Related Processes and Repeated Testing Effects

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Cognitive Change as Conditional on Age Heterogeneity in Onset of Mortality-Related Processes and Repeated Testing Effects
Cognitive change as conditional on age heterogeneity in onset of mortality-related processes and repeated testing effects

Chronological age is only one of many alternative time metrics for describing aging-related change and variability, and it may not always be the most useful one. An age-based modeling approach assumes that within-person change is well described by the average (or aggregate) age trend in the population. However, in later life this is unlikely to be the case because changes at both the individual and population level can often be traced to pathological processes (i.e., morbidity and comorbidity) that, although often linked to chronological age, are not necessarily related strongly to chronological age. In ...

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