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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]
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.
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.
One theory of the positivity effect in older adults' memories is that it is produced by cognitive control mechanisms that improve and decrease negative information due to older adults' greater focus on emotional regulation. [7] Research shows an age-related reversal in the valence of information processed within the medial prefrontal cortex ...
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.
In psychology, developmental stage theories are theories that divide psychological development into distinct stages which are characterized by qualitative differences in behavior. [ 1 ] There are several different views about psychological and physical development and how they proceed throughout the life span.
According to this theory, older adults' self-concept depends on social interactions. In order for older adults to maintain morale in old age, substitutions must be made for lost roles. Examples of lost roles include retirement from a job or loss of a spouse. [30] Activity is preferable to inactivity because it facilitates well-being on multiple ...
As to research and theory, Baltes was interested in advancing a life-span view of human ontogenesis that considers behavioral and cognitive functioning from childhood into old age using a family of perspectives that together specify a coherent metatheoretical view on the nature of development. [6]