Which of the following sleep stages dominates the first half of the night?
A. stage 4
B. stage 3
C. stage 2
D. stage 1
Answer: B
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If mothers who carry the AIDS virus are treated with antiviral drugs during pregnancy, what percent of infants are born with AIDS?
A. about 50 percent B. more than 25 percent C. less than 10 percent D. about 5 percent
Research has demonstrated that brief periods of mental stress can trigger sudden symptoms of heart disease in approximately ____ of patients with stable heart disease
a. 5–15% b. 10–30% c. 30–70% d. 85–95%
Which of the following is the most common method of conducting a job analysis?
a. Observation b. Task analysis c. Interview d. Job participation
Ramona was in a crowd of fellow students when she saw a maintenance worker fall down a flight of stairs at the entrance to a building. Ramona continued on to her class without helping the worker. Ramona's behavior reflects
A. deindividuation. B. diffusion of responsibility. C. social interference. D. social facilitation.