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Evolutionary Adaptation Theory
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ability activity adolescence adult adulthood allele American amniocentesis associated B. F. Skinner babies become behavior biological birth blastocyst boxed insert boys brain caretakers cells changes Chapter chil child childhood chromosome cognitive concept cultural developmental developmental psychologists disorder dren early emotional ences environment Erik Erikson Erikson experience factors fathers feel fetus Figure Freud genes genetic girls growth homosexual hormones human individuals infants instance intelligence interaction Jean Piaget Kagan language learning lives male maturation menarche ment mental months of age moral Moro reflex mother neonate newborn object object permanence observed occur organism ovum parents patterns peers percent period person physical Piaget placenta play pregnancy problems psychologists puberty reflex relationships responses role scientists self-concept sexual skills social society sperm stage stimuli stress teenagers tend theory thought tion uterus women X chromosome young youngsters zygote