Jacquelynne Eccles and Her Associates Have Conducted Research Which Implies

Jacquelynne Eccles and her associates have conducted research which implies that

A) gender-role stereotypes create self-fulfilling prophecies that promote sex differences in cognitive performance
B) biological differences between the sexes are most responsible for sex differences in cognitive performance
C) parents and teachers think grade-school girls must try harder than boys in math because girls perform worse in math during the early grades than boys do
D) the large underrepresentation of males in professions requiring verbal skills reflects males' relative lack of verbal ability
E) biological differences between the sexes are most responsible for sex differences in cognitive performance and the large underrepresentation of males in professions requiring verbal skills reflects males' relative lack of verbal ability