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Demographic transition. In demography, demographic transition is a phenomenon and theory which refers to the historical shift from high birth rates and high death rates to low birth rates and low death rates, as societies attain more technology, education (especially of women) and economic development. [ 1]
The Tanner scale (also known as the Tanner stages or sexual maturity rating ( SMR )) is a scale of physical development as children transition into adolescence and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics, such as the size of the breasts, genitals ...
t. e. Child development stages are the theoretical milestones of child development, some of which are asserted in nativist theories. This article discusses the most widely accepted developmental stages in children. There exists a wide variation in terms of what is considered "normal", caused by variations in genetic, cognitive, physical, family ...
e. 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 .
Jean Piaget in Ann Arbor. Piaget's theory of cognitive development, or his genetic epistemology, is a comprehensive theory about the nature and development of human intelligence. It was originated by the Swiss developmental psychologist Jean Piaget (1896–1980). The theory deals with the nature of knowledge itself and how humans gradually come ...
Four of these stages stretch from birth through puberty and the final stage continues throughout the remainder of life. [7] Erik Erikson (b.1902) developed a psychosocial developmental theory , which was both influenced and built upon by Freud, which includes four childhood and four adult stages of life that capture the essence of personality ...
There is speculation that middle childhood/preadolescence or ages 6–12 [1] are the most crucial years of a child's life. Adolescence is the stage of life that typically starts around the major onset of puberty, with markers such as menarche and spermarche, typically occurring at 12–13 years of age. [ 2 ]
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. [ 4][ 5] This theory is ...