Erik Erikson and Alfred Adler are two Neo-Freudians that developed their own theories under Freud’s influences. The change they contribute to classical psychoanalysis was the emphasis of social factors as an influence of development of personality. Adler's theory of striving for superiority broadens the ideas to show that people are not only driven primarily by sexual and aggression drives. While Erikson’s 8 stages of psychosocial development is different from Freud's psychosexual stages it also helps contributed to the understanding of human behavior.