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Development of the Central Nervous System  an ongoing process, through adolescence and maybe even adult hood ?  the nervous system is “plastic”   Experience plays a key role Dire consequences when something goes wrong - “teratogens” - Drugs of abuse, industrial chemicals, caffeine?, household chemicals Stages of Development Phase Prenatal Infancy Childhood Approximate Age Highlight Conception - birth Rapid physical growth Birth - 2 yrs 2 - 12 yrs Motor development Abstract reasoning Identity creation,