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Figure 9.9: Theories of human aging. Genetics: One’s genetic make-up certainly plays a role in longevity, but scientists are still attempting to identify which genes are responsible. Based on animal models, some genes promote longer life, while other genes limit longevity.
- Martha Lally, Suzanne Valentine-French
- 2021
Psychosocial Theories of Aging. Psychosocial theories of aging refer to theories that focus on the social and psychological aspects of successful aging. Three major psychosocial theories have been proposed to attempt to explain successful aging. These include the activity theory, disengagement theory and the continuity theory.
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senescence theory of aging. Unlike the earlier programmed theory of evolution and aging, which tried to findreasonswhyevolutionmight favor aging, evolutionary senes-cence theory focuses on the failure of natural selection to affect late-life traits. Natural selection, because it oper-
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Sociological Theories of Aging primarily involve Disengagement Theory, Activity Theory, and Continuity Theory Ecological Systems Theory involves five key systems: Micro, Meso, Exo, Macro, and Chrono Live Course Theory provides a framework for theoretically understanding the entire course of life, including the four T’s of Trajectories, Transitions, Turning Points, and Timing.
Research in context. Evidence before this study. We conducted an umbrella review of healthy ageing concepts and definitions in pubmed and google scholar between October and December 2020 using the terms: healthy, successful, active, and optimal ageing combined with definition, model, concept, domain, construct, determinant, mechanism, or dimension.
Nov 1, 2015 · The literature suggests that both explanations are valid; psychological theories of aging can refer to both psychological changes as a result of aging and adaptive psychological mechanisms (or lack thereof) to counteract the losses associated with physical decline. For example, the field of cognitive psychology addresses age-related changes in ...
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Categorization of the main theories of aging. Classification based on the worked developed by (Semsei, 2000) and (de Magalhães, 2013).(1) Program theories. Programmed aging theories, sometimes referred to as active or adaptive aging theories, suggest that there is a deliberate deterioration with age because a limited life span results in evolutionary benefits (Goldsmith, 2012).
