While visiting your niece in the hospital, you see several other very young children. You observe one young child who is placid and smiles often, whereas another child seems to be very active and fussy. Such differences in style are often described as reflections of

What effect does naltrexone have on a heroin abuser?

a) It provides a safer "high." b) It treats delirium tremens. c) It stops the craving for heroin. d) It blocks the effects of heroin.

After night class, you are walking back to your car when you catch a glimpse of someone running up behind you. You quickly turn and brace for a possible attack, but the students runs on by. It is only after you reacted to the possible attack that you realized that you felt afraid. Reacting before experiencing the feeling of fear is BEST explained by which theory of emotion?

a. the James-Lange theory b. the common sense theory c. Schachter's cognitive theory d. the Cannon-Bard theory