Recent scientific studies have concluded that most women should gain ____ pounds during pregnancy

Who developed a psychosocial theory in which the driving force behind development is not sexuality but the need to become integrated into the social and cultural environment?

a. Freud b. Erikson c. Bronfenbrenner d. Piaget

Studies have shown that messages communicated by a reference group result in

a. more content-focused processing b. greater attitude change c. greater desire for similarity d. all of the above