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HLTC22H3 (102)
Anna Walsh (49)
Chapter 3

Chapter 3-Theroies of aging

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Health Studies
Anna Walsh

HLTB01H3 Health, aging and the lifecycle Monday, September 27, 2010 Chapter 3- Theories of Aging Sometime in literature, theories and models are not distinguished among themselves very well, which makes it harder to understand. In a way, theories are more specifications of the process involved for a particular phenomenon. Its a set of ideas to explain something. Models on the other hand specify categories of variables that should be related representing the theory. Aging is usually defined as: death is the final event Theories of aging Since the beginning, the aging process happens at the biological, psychological and social levels. No one knows for sure why we age, but there has been some outlooks on processes as to why we age and coming up with theories. Bengtson, Rice and Johnson (1999): these 3 argues that there is a lack of connection between theories of gerontology. - explains 2 reasons for this lack 1. There are 3 different aspects of age that theories can look upon: characteristics of aging population, the developmental or aging process, and the way age is incorporated into the aging structure. 2. Gerontology is a bottom-up discipline. They start with getting facts and try to group them into models and hardly achieve the status of theory. Model and theory often not carefully distinguished. Gender is one of the strongest predictors of life expectancy with women living the longest. Deviation Amplification Mechanisms: developed by Maruyama in 1963 argued that systems (Homeostasis: heart rate, blood pressure, respiratory rate) can and do change over time. Once a system is out of homeostasis, deviation amplification mechanisms take over and speed up the change or imbalance. This theory kinda represents the chaos theory= a way of specifying a Nondeteminate process, a process where it doesnt follow a simple cause and effect, there are many variables to this acting out onto this imbalance. Chaos theory shows us how small changes can result in very large differences. The biological theories of aging Genetic Theory, Molecular cellular theories of aging and system level theories. www.notesolution.com
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