What is the percentage of teenagers who experience major depression—that is, depression that is severe and lingers for a long time?

When in a large group of people, an individual's tendency to assume responsibility may be hampered because being in a group causes

a. one to ignore just-world beliefs. b. one to become more concerned for his or her own safety. c. a feeling that no one is personally responsible for helping. d. an increase in one's arousal level so that one becomes less focused.

Which item is the best example of a prototype for the category fruit??

a. ?kiwi b. ?tomato c. ?apple d. ?apricot