For data that are not normally distributed, the standard deviation will sometimes be negative
Indicate whether the statement is true or false
F
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It might seem contradictory at first that comprehensive sex-education programs are more effective than abstinence-only programs at delaying the age at which teens become sexually active. One reason might be that _____
a. comprehensive programs have a stronger message about abstinence b. comprehensive programs include access to condoms c. comprehensive programs teach sexual health skills, such as how to refuse unwanted sex and how to avoid risky sexual behavior d. comprehensive programs get teens on birth control
Ecstasy causes brain cells to release extra amounts of
a. acetylcholine. b. serotonin. c. histamine. d. dopamine.
Most of the successful gifted in Terman's study
a. had educated parents who taught them to value learning. b. were the ones that had the highest IQ (above 180 IQ) of the gifted subjects in the study. c. were the ones that had the lowest IQ (140 IQ) of the gifted subjects in the study. d. were the most introverted in the gifted group.
A smoker who stays away from other smokers is:
a. escaping the problem. b. failing to test her/his commitment. c. extinguishing reactions to the antecedents. d. avoiding antecedents to a problem behavior.