According to the text, about what percent of the population is left-handed?

A group of children previously identified as aggressive were put in a social situation and observed. Based on Dodge's research, observers are likely to see these children

a. ignore the behavior of other children. b. overinterpret the aggressive intentions of their peers. c. contribute a high level of positive energy to the group. d. tend to be preoccupied with their own behavior and its effects on others.

Bob tells Jan that he is feeling fine, but Jan doesn't believe him. What should she focus on to have the BEST chance of identifying any emotions Bob might be hiding?

a. his words b. his body posture c. his vocal intonations d. his facial expressions