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Selectivity theory (aging) Socioemotional selectivity theory; Stage-crisis view; Stem cell theory of aging; Stereotype embodiment theory; T. Telomere theory of aging; V.
The activity theory and the disengagement theory were the two major theories that outlined successful aging in the early 1960s. [4] The theory was developed by Robert J. Havighurst in 1961. [ 1 ] In 1964, Bernice Neugarten asserted that satisfaction in old age depended on active maintenance of personal relationships and endeavors.
Ageing (or aging in American English) is the process of becoming older until death. The term refers mainly to humans , many other animals , and fungi; whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal .
Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [1]
The theory distinguishes normal aging from pathological aging, neglecting the older adults with chronic illness. The feminist theories criticise the continuity theory for defining normal aging around a male model. [6] Another weakness of the theory is that it fails to demonstrate how social institutions impact the individuals and the way they age.
Geriatric psychology is a subfield of psychology that specializes in the mental and physical health of individuals in the later stages of life. These specialized psychologists study a variety of psychological abilities that deplete as aging occurs such as memory , learning capabilities, and coordination .
Gerontology (/ ˌ dʒ ɛr ən ˈ t ɒ l ə dʒ i / JERR-ən-TOL-ə-jee) is the study of the social, cultural, psychological, cognitive, and biological aspects of aging.The word was coined by Ilya Ilyich Mechnikov in 1903, from the Greek γέρων (gérōn), meaning "old man", and -λογία (), meaning "study of".
The causes for memory issues and aging is still unclear, even after the many theories have been tested. There has yet to be a distinct link between the two because it is hard to determine exactly how each aspect of aging effects the memory and aging process.