Scientists are reasonably confident that group differences are significant when the
probability that chance alone can explain the difference is less than ______ percent.
a. 2 c. 7
b. 5 d. 10
B
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All of the following are criticisms of DSM-5 EXCEPT a. It emphasized reliability, sometimes at the expense of validity
b. It emphasized a biological perspective, sometimes at the expense of the human aspect of psychological disorders c. It is too similar to previous, flawed nosological systems. d. Its diagnostic categories are still too "fuzzy" at the edges, which contributes to frequent comorbid diagnoses.
A measure that does not yield consistent scores and does not measure what it is supposed to measure is ____
a. both valid and reliable b. neither valid nor reliable c. valid but not reliable d. reliable but not valid
Working for a consumer research organization, a woman needs to learn about behavior that she can neither observe in its natural setting nor study experimentally. She probably will use the __________ method
a. observational c. experimental b. case study d. survey
Why are children in middle childhood better able to change their speech in response to the needs of listeners?
A. They are more likely to be reinforced for speaking correctly. B. They are more attuned to modeling adult speech. C. Age and advances in perspective-taking skill. D. They are more exposed to language differences in reading.