Four participants sign up for an experiment examining the effects of alcohol on sociability. One participant is given an alcoholic beverage to drink and is told that it is alcohol. A second participant is given an alcoholic beverage to drink but is told that it is nonalcoholic. A third participant drinks a nonalcoholic beverage but is told that it contains alcohol, and a fourth participant is
given a nonalcoholic beverage and is told that it is nonalcoholic. Suppose that the effects of alcohol on sociability were entirely due to the alcohol and had nothing to do with expectancies. Which participant(s) would behave more socially after drinking?
A) the second participant only
B) the third participant only
C) the first and third participants
D) the first and second participants
D) the first and second participants
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Fiona has been diagnosed with bulimia nervosa. Based on the physical symptoms listed in your text, you should expect that Fiona will show evidence of
a. amenorrhea and low blood pressure. b. dental problems and cardiac arrhythmias. c. cardiac arrhythmias and osteoporosis. d. dental problems and elevated blood pressure.
As scientists, psychologists have confidence in theories that
a. have stood the test of time. b. reveal the true nature of human behavior. c. are tied to observable evidence. d. do not rely simply on observation. e. are accepted by the majority of leading scholars.
Which of the following is true of action potentials in axons?
A. Only one action potential is generated to produce a depolarization along an entire axon. B. Only two action potentials are generated to produce depolarization along an entire axon. C. Many action potentials are generated next to each other along the length of an axon. D. Action potentials are generated at the beginning, middle, and end of an axon only.
As a clinical neuropsychologist, Jasper meets with a lot of patients who have various disorders. Jasper finds that it is difficult to test people with delirium, mostly because
A. their distracted attention makes them uncooperative. B. they are in a persistent vegetative state. C. their memories have been impaired. D. they are partially paralyzed and do not know it.