Why are clinical trials often held in more than one clinic at a time?
a) to promote randomization
b) to increase generalizability
c) to eliminate placebo effects
d) to control expectation effects
b
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__________ include hypochondriasis and conversion disorder.
A. Somatoform disorders B. Schizophrenic disorders C. Dissociative disorders D. Affective disorders
What happens if someone stays awake for several days?
a. Alertness decreases steadily throughout the period of wakefulness. b. Alertness decreases for the first day and then remains steady. c. Alertness is better in the morning than it was during the previous night. d. Alertness increases and decreases on an irregular, unpredictable basis.
Mort is trying to convince his parents that he should enroll at a university in another state, rather than the local university. He has made five strong points that support his position, but his parents are not yet convinced. Based on the research into factors that influence persuasion, at this point Mort should
a. add additional points that support his position, even if they are weaker arguments. b. ask his parents to think about their decision for a few days. c. repeat the arguments that he has already made. d. play some soft background music while he and his parents discuss the issue some more.
______________ reinforcers are used during shaping because they enable rapid delivery of the reinforcer and prevent satiation from occurring
a. unconditioned b. tangible c. conditioned d. edible