The subjects in the experimental group receive the
experimental drug, while the subjects in the control group receive a placebo. Although the experimenter knows which subjects are in the experimental group and which are in the control group, the subjects themselves do not know who is in which group or who received the real drug and who the placebo. This experimenter is using
a. a double-blind study to control for researcher bias.
b. a single-blind study to control for research participant bias.
c. random selection to control the extraneous variables.
d. random assignment to control the dependent variables.
ANSWER: b
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Jason has reached a card in his self-directed desensitization procedure that he cannot visualize without becoming tense in three attempts, so he stops the procedure for the day. The next day, he will continue with the desensitization by
a. starting one or two cards before the one on which he stopped the previous day. b. starting with the card on which he stopped the previous day. c. skipping the card on which he stopped the previous day and proceeding with the next card. d. starting at the beginning of the hierarchy with the least fear-producing card.
According to the textbook, the male hormone system is _______, and the female hormone system is
a. constant; cyclic. b. cyclic; constant. c. cyclic; cyclic. d. constant; constant.