Masters and Johnson's empirical work in human sexuality differed from that of earlier researchers because they also
A) interviewed adults instead of just conducting survey-based research.
B) observed and recorded subjects' physical responses during sexual activity.
C) interviewed couples together instead of just conducting individual interviews.
D) conducted longitudinal research on the psychosexual development of couples.
B
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The boys who participated in the Robbers Cave study were
a. from inner city juvenile delinquent gangs. b. identified by their teachers as very aggressive. c. normal, well-adjusted 11-year-old boys. d. repeatedly reminded by the staff that the other group was the “enemy.” e. not permitted to talk to the other group.
What percentage of U.S. births take place in freestanding birthing centers?
10 25 50 5
Which of the following substances are released primarily at night in humans?
A. dopamine and melatonin B. norepinephrine and growth hormone C. melatonin and growth hormone D. acetylcholine and melatonin
Sleep patterns are most likely to change at puberty due to
A. social pressures to stay out late with friends. B. a drop in the production of melatonin. C. the need to sleep more due to the adolescent growth spurt. D. changes in physical activity and eating patterns.