This document discusses cognitive, emotional, and social development from childhood through adulthood based on theories from Freud, Erickson, and Piaget. It describes key stages of development including trust vs mistrust in infancy, autonomy vs shame and doubt in toddlers, initiative vs guilt in preschoolers, industry vs inferiority in school-aged children, identity vs role confusion in adolescence, intimacy vs isolation in young adults, and integrity vs despair in late adulthood. It also outlines Piaget's stages of cognitive development from sensorimotor to concrete to formal operational thought. Dental considerations are discussed for each developmental period.