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  2. Adult development - Wikipedia

    en.wikipedia.org/wiki/Adult_development

    Further research has concluded that development continues well after adolescence and into late adulthood. This new field of research was influenced by the aging population of the "baby boomer" generation. [11] The population of Americans who are the age of 65 or over was at roughly 9 million in 1940.

  3. Aging and society - Wikipedia

    en.wikipedia.org/wiki/Aging_and_society

    [4] [38] Other research shows that even late in life, the potential exists for physical, mental, and social growth and development. [39] Successful ageing consists of three components: [3] The avoidance of illness and disease; High cognitive and physical function; Social and productive engagement

  4. Old age - Wikipedia

    en.wikipedia.org/wiki/Old_age

    By 2013, the over-65 population had grown to equal the under-5 population and is projected to double the under-5 population by 2050. [167] Before the surge in the over-65 population, accidents and disease claimed many people before they could attain old age, and health problems in those over 65 meant a quick death in most cases.

  5. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. Biological process of getting older This article is about ageing specifically in humans. For the ageing of whole organisms including animals, see Senescence. For other uses, see Ageing (disambiguation). Part of a series on Human growth and development Stages Gamete Zygote Embryo Fetus ...

  6. Margie E. Lachman - Wikipedia

    en.wikipedia.org/wiki/Margie_E._Lachman

    Lachman's research is in the area of lifespan development with a focus on midlife and later life. Her current work is aimed at identifying psychosocial (e.g., sense of control) [8] and behavioral (e.g., physical exercise) factors [9] that can protect against, minimize, or compensate for declines in cognition (e.g., memory) [10] and health. [11]

  7. Activity theory (aging) - Wikipedia

    en.wikipedia.org/wiki/Activity_theory_(aging)

    One quantitative study aimed to fill this gap by analyzing the effects of extraverted personality on aging activity levels through addressing its interaction with physical and mental health. [7] Through a series of telephone interviews in Hong Kong, China, a sample of 304 adults over the age of 50 were surveyed on perceived physical and mental ...

  8. Erikson's stages of psychosocial development - Wikipedia

    en.wikipedia.org/wiki/Erikson's_stages_of...

    Erikson's stages of psychosocial development, as articulated in the second half of the 20th century by Erik Erikson in collaboration with Joan Erikson, [1] is a comprehensive psychoanalytic theory that identifies a series of eight stages that a healthy developing individual should pass through from infancy to late adulthood.

  9. Stage-crisis view - Wikipedia

    en.wikipedia.org/wiki/Stage-Crisis_View

    Stage-crisis view is a theory of adult development that was established by Daniel Levinson. [1] [2] Although largely influenced by the work of Erik Erikson, [3] Levinson sought to create a broader theory that would encompass all aspects of adult development as opposed to just the psychosocial.