When a placebo control group is used, _____
a. participants don't know whether they are in the control or experimental condition.
b. different amounts of the independent variable are presented to different participants.
c. the design must be a within subjects design.
d. all of these are true.
A
Participants all get a pill and they are not informed as to whether it contains the active ingredient or not; therefore they don't know which condition (control or experimental) is in effect.
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The galvanic skin response is a measure of
a. blood flow through the skin. b. muscle tension of the skin. c. electrical conductivity of the skin. d. two-point difference threshold of the skin.
Alcohol, nicotine, prescription medications, and illegal substances may sexual functioning
a. improve b. interfere with c. diagnose d. stimulate
The intelligence quotient (IQ) score is computed by dividing a child's ____ by the child's ____ and multiplying by 100.
A. number of correct answers; number of incorrect answers B. number of correct answers; total number of questions asked C. mental age; chronological age D. chronological age; mental age
Overconfidence in our judgments, even when they are wrong, tends to be based upon
a. self-fulfilling prophecies. b. ignoring the fact that overconfidence exists. c. focusing only on examples that coincide with our judgments. d. all of these.