When neither the person taking the drug nor the person evaluating the effects of the drug knows which people are getting the experimental drug and which people are getting the placebo, this procedure is referred to as a(n)
A. design flaw.
B. effect size.
C. preclinical study.
D. double-blind procedure.
D
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Different explanations of behavior are usually judged by how
a. consistent they are with the beliefs of the researcher. b. well they combine situational and environmental variables. c. well they can make accurate and comprehensive predictions. d. consistent they are with the experiences of the general public.
It is impossible to prove with certainty the truth of H1 when using sample data
Indicate whether the statement is true or false
What Piagetian task was used to test whether a child had progressed from concrete to formal operations?
A. open-box problem B. pendulum problem C. three-mountain problem D. blueprint problem
Which of the following are most likely to show an increased rate of homosexuality/bisexuality?
A. women with congenital adrenal hyperplasia B. men with an XYY chromosomal type C. men born during the late winter months to stressed mothers D. men with congenital adrenal hyperplasia