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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.
At the Department of Psychological Science at University of California, Irvine, she teaches in the areas of life-span development and motivational psychology. Heckhausen worked with Richard Schulz and formulated the life-span theory of control, their journal article was published in 1995 as A life-span theory of control. [2]
Laura L. Carstensen is the Fairleigh S. Dickinson Jr. Professor in Public Policy and professor of psychology at Stanford University, where she is founding director of the Stanford Center on Longevity [1] and the principal investigator for the Stanford Life-span Development Laboratory. [2]
Developmental psychology is the scientific study of how and why humans grow, change, and adapt across the course of their lives. Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. [1]
Wilhelm T. Preyer, a pioneer of child psychology, was heavily inspired by Darwin's work and approached the mental development of children from an evolutionary perspective. [14] However, evolutionary theory has had a limited impact on developmental psychology as a whole, [5] and some authors argue that even its early influence was minimal. [15]
Whitbourne's research program has examined a variety of issues related to people's experiences of identity over the lifespan. Topics include identity and self-consciousness in middle and later adulthood [17] the connection between national, ethnic, and personal identity in a multiethnic sample of young adults, [18] and the theoretical and methodological challenges associated with studying ...
So far, empirical research from a life course perspective has not resulted in the development of a formal theory. [8] Glen Elder theorized the life course as based on five key principles: life-span development, human agency, historical time and geographic place, timing of decisions, and linked lives. As a concept, a life course is defined as "a ...
The theory was developed in the 1950s [4] and is used to answer questions about topics such as organism size, age of maturation, number of offspring, life span, and many others. [5] In order to study these topics, life history strategies must be identified, and then models are constructed to study their effects.