psyc paper 4 - Julia Nan PID: 720195521 Psychology 101-001...

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Julia Nan PID: 720195521 Psychology 101-001 Human Development Paper I pledge that I have neither received nor given unauthorized assistance on this assignment Piaget’s model of cognitive development is a stage theory, and he proposed children mental development go through four stages: sensorimotor period, preoperational period, concrete operational period, and formal operational period. The first stage, the sensorimotor stage, lasts from birth to 2 years of age. In this stage, infants develop the ability to coordinate their sensory input with their motor actions. In the beginning of the stage, much of the infant’s behaviors are merely responses to stimuli, but gradually, infants learn to use mental symbols to represent objects. Also during this stage, infants acquire the sense of object permanence, or the recognition that an object will continue to exist even when they are no longer visible. The sense of permanence graduate appears between 4 and 8 months of age and completely develops by about 18 months of age. The second stage is called the preoperational period, which extends from age 2 to age 7.
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This note was uploaded on 01/24/2012 for the course CHIN 252 taught by Professor Smith during the Spring '11 term at Ahsanullah University of Sci & Tech.

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