Cultural norms regarding how people should convey emotion to others are known as

A girl who forms a club believes that the members of her club are better than the members of her ex-friend's club. This girl's belief illustrates

a. an in-group bias. b. an out-group bias. c. diffusion of responsibility. d. demand characteristics.

In infants who have experienced birth trauma,

A) sleep behavior is organized and patterned. B) disturbed REM–NREM sleep cycles are often present. C) REM sleep is filled with vivid dreams. D) sleep–wake cycles are affected more by darkness–light than by fullness–hunger.