Sometimes in a drug study, the experimental group given the actual drug and the control group given the inactive substance both initially show improvement. This is due to
a. the Barnum effect.
b. the placebo effect.
c. a biased sample.
d. a random assignment of subjects.
B
You might also like to view...
Prida has witnessed a violent crime involving a knife. Research suggests that he will be less likely to identify the culprit than in a situation where no knife was present because Prida will
a. be less aroused. b. focus more on the victim. c. spend more time looking at the knife. d. be too afraid to remember anything accurately.
Michael is always on edge. He experiences prolonged stress as part of his job. His wife complains that he always perceives his job as a threat to his health. What can we reasonably expect from Michael?
A. eating problems that will lead to a dangerous gain of weight B. bruxism C. heightened physiological arousal that strains his immune system D. depression and possible suicide if he remains in his current job
A key feature of projective techniques to assess personality is the use of:
A) essay questions instead of true/false questions. B) validity scales to assess dishonesty. C) ambiguous objects designed to elicit unique responses. D) questions asking participants to imagine themselves in the future.
Which of the following is (are) true about the F distribution?
a. it has no negative values b. it is positively skewed c. there are a family of F curves uniquely determined by df(numerator) and df(denominator) d. the mean of the F distribution equals 0 e. all of these f. it has no negative values and it is positively skewed g. it has no negative values, it is positively skewed and there are a family of F curves uniquely determined by df(numerator) and df(denominator)