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Paper Topic:

matrix of the life span

Matrix of the Life Span


One month to one year , relates mostly with mother , cortical gray matter decreases , cries for everything and experience the world through movement and sense

Sleeps most of the time , shows preference for novel stimulus , cannot recognize object permanence , cortical white matter increases and is egocentric


One to four years , becomes self reliant , confident , cortical gray matter decreases , acquire motor skills

Can walk , tends to become independent , cortical white matter increases can get food for self , cannot use logical thinking



Three to six years , relates with others , cortical gray matter decreases self expression and cannot conserve logical thinking

Become active , broadens social horizon , takes decision , cortical white matter increases and magical thinking predominates

Middle childhood

Four to eight years , relates with peers , cortical gray matter decreases forms personal opinion and can think logically

Acquire skills , can receive feedback from outsiders ,cortical white matter increases , develops a sense of competence and intelligence is demonstrated


Thirteen to nineteen years , attracted to the opposite sex develops cortical gray matter decreases , formation of personal social identity and abstract thinking

Active , cortical white matter increases has a sense of self and can think logically in the mind

Early adulthood

Twenty to thirty nine years ,forms intimate relationship brain increases in size , develops a sense of identity

Peak of physical health , can depend on others , develops sociopolitical views

Late adulthood

Sixty plus , socially more accepting brain gradually degenerates , full of wisdom , and feels a sense of accomplishment or failure

Begins to grow weak


Jay N . Giedd1 , Jonathan Blumenthal (1999 ) Brain development during childhood and adolescence : a longitudinal MRI study . Nature Neuroscience 2 , 861 - 863 (1999

doi : 10 .1038 /13158

Amann-Gainotti , M Ducret , J .-J (1992 . Jean Piaget , disciple of HYPERLINK "http /en .wikipedia .org /wiki /Pierre_Janet " \o "Pierre Janet Pierre Janet : Influence of behavior psychology and relations with psychoanalysis . Information Psychiatrique , 68 , 598-606...

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