Final answer:
Erikson extended Freud's theory by placing greater emphasis on social and cultural influences than on biological determinants. According to Erikson's psychosocial theory, how we interact with others affects our sense of self and identity.
Step-by-step explanation:
Erikson extended Freud's theory by placing greater emphasis on the social and cultural influences than on the biological determinants. While Freud focused on biological drives and the impact of sociocultural factors on personality development, Erikson emphasized the role of social interactions and cultural influences in shaping a person's identity throughout their lifespan. Erikson's psychosocial theory suggests that how we interact with others is what affects our sense of self and identity.