The standard deviation
a. reflects the similarity among a set of scores
b. equals the sum of all scores minus the mean squared.
c. is an approximation of the average deviation around the mean.
d. always equals 0.
c
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During rapid smoking, clients are told to smoke continuously, taking a puff every six to eight seconds. Rapid smoking continues until the smoker is miserable and can stand it no more. After a few sessions, many smokers cannot smoke again without feeling a little ill. They have developed a(n)
a. acquired habit. b. spontaneous recovery. c. modeled effect. d. conditioned aversion.
Psychologists sometimes study ________ groups, which are those that are formed by attachments to the specific identity of the group
a) distributed-informational b) distributed-normative c) common-identity d) common-bond
Research into the psychological factors that contribute to substance use and abuse suggests that _____.
a. life stressors play an important role in the development of substance-use disorders b. adolescent females with eating disorders are at low risk for substance-use problems c. having a mental illness does not increase the risk of substance use d. the risk of substance use is higher in people with the personality characteristic "behavioral overcontrol"
The distribution of a statistic that one would get by taking every possible sample of n scores from a population is the ________ of the mean.
A. frequency distribution B. skewed distribution C. sampling distribution D. None of the answers is correct.