This document discusses several theories of socialization and human development. It describes how socialization is the lifelong process by which people learn culture and develop their personality through social experience. Several influential theorists are outlined, including Freud, Piaget, Kohlberg, Gilligan, Mead and Erikson. Their stage theories explain personality and moral development from childhood through adulthood. Key agents of socialization that influence development are also defined, such as family, school, peer groups, and mass media.