A researcher who investigates the proportion of individuals who have a disorder during a particular period of time like the past year is best described as studying the ____ of the disorder
a. incidence
b. prevalence
c. lifetime prevalence
d. criteria
B
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Which theoretical perspective has become an important alternative to the Piagetian approach?
A. behavior modification B. classical conditioning C. information processing D. social-cognitive learning
Which of the following is true of percentiles? a. They are the inverse of percentile ranks
b. They indicate what percentage of scores fall below a given score. c. They describe the relationship of test scores to the hypothesized constructs. d. They divide the total frequency for a set of observations into hundredths.
An experiment is externally valid if:
a. the outcome can be attributed to the independent variable only. b. the results generalize to other settings. c. the results are attributed only to external variables. d. there are no alternative explanations of the findings.
Miles took a personality assessment test and the results indicated he was a stable, outgoing extrovert. Six weeks later he took the same test only this time the results indicated he was moody, difficult to get along with and socially withdrawn
The test Miles has taken is __________ a) not valid. b) not reliable. c) biased. d) non-standardized.