Two groups of boys at a summer camp at Robbers' Cave, Oklahoma, each developed prejudice and hostility toward members of the other group. The hostility turned to friendship when

A) the groups were allowed to compete with each other for prizes.
B) the groups were required to work cooperatively toward a common goal.
C) the counselors told the boys they could no longer visit the nearby girls' camp.
D) one group attacked and subdued the other.

Antipsychotic drugs treat symptoms such as __________

A) hopelessness, sadness, and suicide ideations.
B) excessive worry, repetitive thoughts, and compulsive behavior.
C) hallucinations, delusions, and bizarre behavior.
D) manipulation, lying, and cheating.