A substance that increases, or is believed to increase, a person's sexual desire is referred to as ____

Ernest didn't know whether the boy's locker room was located down the hallway to his right or the one to his left. Crossing his fingers, he decided to try the left hallway. Ernest's strategy for finding the locker room best illustrates the use of:

a. the belief perseverance phenomenon. b. the confirmation bias. c. the representativeness heuristic. d. the framing effect. e. trial and error.

Amphetamines are __________

a. barbiturates b. stimulants c. hallucinogens d. opiates