Goal-directed behavior that seems to be entirely self-motivated is called:

According to the text, what is the best estimate of the number of people with a mental disorder who improve without any professional treatment?

a. one-tenth b. one-third c. one-half d. three-quarters

The research on people's willingness to help strangers in distress was inspired by

a. research on the bystander intervention effect. b. newspaper reports of an assault and murder of a woman. c. the discovery of an altruism gene. d. the finding of altruistic behavior in various animal species.