PSYCH 9B Study Guide - Final Guide: Synaptic Pruning, Prenatal Development, 18 Months
Document Summary
Infant brain development, perceptual development, motor re exes, in uence of prenatal environmental on development. Human physical development follows a predictable progression prenatal period: conception to birth infancy: 18 to 24 months childhood: ages 11 to 14 adolescence: ages 18 to 21 adulthood: lasts until death. Synaptic pruning highly plastic : connections used, saved; connections not used, decay allows brain to adapt well to any environment. Low birth weight; face and head abnormalities; intellectual disability; behavioral and cognitive problems recreational drugs can also affect development. Premature birth; unexplained sudden death in infancy; newborn withdrawal. Motor re exes grasping re ex: survival mechanism that has persisted from our primate ancestors. Adaptive because the offspring need to be carried rooting re ex: turning and sucking sucking re ex pave way for learning more-complicated behavior patterns like feeding oneself or walking. Roll over, sit up, crawl, stand, walk, talk.
