Card 12 / 104: In order for the professor of counselor education (see question 708) to conduct an experiment regarding his hypothesis he will need a(n) _______ and a(n) _______.
A) biofeedback group; systematic desensitization group.
B) control group; systematic desensitization group.
C) control group; experimental group
D) at least 60 subjects in the control group; at least 60 subjects in the experimental group

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