According to Piaget, maturation is the driving force behind cognitive development from one stage to the next.

Research on sex differences in temperament shows that

A) girls are more daring than boys, and they have a large advantage in effortful control. B) boys are more anxious and timid than girls, and they are slightly more impulsive. C) girls' advantage in effortful control contributes to better school performance. D) boys are more active than girls, but they also tend to be more anxious and timid.

There are numerous studies comparing the effects on children of mothers who work. What finding(s) was/were noted consistently?

a. children have more egalitarian attitudes b. daughters consider more options when choosing careers c. sons are more apt to share in the household work when they marry d. All of the above have been noted