Sleep paralysis, which normally prevents us from moving during REM sleep, can also occur just as we are beginning to wake up. During these episodes, people sometimes experience hallucinations

Your teacher asks you to compare the effects of positive and negative reinforcement and report back to the class. What will you tell your classmates?

a) Both increase the frequency of target responses. b) Neither increases the frequency of target responses. c) Punishment is like negative reinforcement in its effects on behavior. d) Negative reinforcement decreases target responses; positive reinforcement increases target responses.

Brooke has been involved in ballet since she was 4 years old, has always earned straight As at school, plays two musical instruments in a competitive youth orchestra, and recently graduated 1st in her class at Harvard. Despite these accomplishments Brooke continues to push herself to set higher goals for herself and fears possible failure in these goals. Brooke's pattern of behaviors may put her

at risk for the development of an eating disorder related to which of the following? a. obsession b. perfectionism c. compulsion d. anxiety