Which situation best illustrates the placebo effect?
a) You sleep because you are tired.
b) You are given a vaccination to prevent diphtheria.
c) You have surgery to repair a defective heart valve.
d) You drink a nonalcoholic drink and become "intoxicated" because you think it contains alcohol.
D
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Consider the research on the brain sizes of different animals. According to this research, (domesticated) dogs should have ____ than (wild, pack-living) wolves after adjustment for differences in body weight
a. larger frontal lobes b. larger left hemispheres c. larger brains in general d. smaller brains in general
The idea that one's self-esteem is tied to one's group memberships is the basis for
a. ingroup prejudice theory. c. competitive prejudice theory. b. social identity theory. d. personal self-esteem theory.
______ can help us determine the likelihood of a range of scores in the normal distribution when we want to know how likely it is that we would obtain a z-score at or above or below a specific value.
A. z-Score table B. Unit normal table C. Standard deviation table D. Standard distribution table
Which of the following is considered a key condition for forgetting under decay theory?
A. Time B. Content C. Distraction D. Emotion