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Developmental Psychology : Major Models Of Psychosocial And Cognitive Development

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Developmental psychology recognizes three main models of psychosocial and cognitive development. The first theory, presented by developmental psychologist and philosopher Jean Piaget, addresses cognitive development. The second theory, presented by psychologist Lawrence Kohlberg, focuses on the development of morality. The third theory, proposed by developmental psychologist and psychoanalyst Erik Erikson, outlines psychosocial development. All three theories are applicable from birth to death.
Piaget believe that children are active thinkers. He recognized that the mind develops through a series of irreversible stages. He also acknowledged that a child’s maturing brain builds schemas that are constantly assimilating and accommodating to the world around them. Piaget’s theory of cognitive development is split into four stages: sensorimotor, preoperational, concrete operational, and formal operational. The sensorimotor stage occurs from birth to nearly two years of age. At this stage, infants learn about the world around them by sensing it and interacting within it. It is also in this stage that the idea of object permanence develops, that is, the awareness that things continue to exist even when they are not being observed. In my personal life, I am certain that in this stage of development I would have enjoyed peek-a-boo, because if I didn’t see it, to my developing mind, it wasn’t there at all. The second stage, preoperational, lasts from two years of age to seven years of
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