A researcher wants to find out if taking a new antidepressant
drug will decrease the symptoms of subjects suffering from social anxiety. The number of symptoms exhibited by the subjects would be the variable.
a. independent
b. dependent
c. extraneous
d. control
ANSWER: b
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A preoperational child would assume
a. that tall glasses hold more liquid than short glasses. b. that objects that are out of sight have ceased to exist. c. that subtraction is easier than addition. d. that problems that have not yet been solved will, in the future, be solved.
Which type of validity is a type of translation validity?
a. face b. predictive c. discriminant d. concurrent
According to Ebbinghaus's forgetting curve, you should review your lecture notes within the first __________ after class.
A. week B. three days C. twenty-four hours D. nine hours
The first 10 students who arrived for the Friday lecture filled out a questionnaire on their attitudes toward the instructor. The first 10 who were late for the lecture were spotted, and afterward filled out the same questionnaire. The appropriate design for testing the significance of the difference between the means is
a. related samples t-test. c. one-sample t-test. b. independent samples t-test. d. z-test.