Approximately what proportion of adults in North America become stepparents, foster parents, or adoptive parents?
one-eighth
one-fourth
one-third
one-half
one-third
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Suppose Jennifer reports hearing extremely faint sounds. According to signal-detection theory, what else do we need to know before evaluating her sensitivity to sounds?
a. Does she have close relatives who can also hear extremely faint sounds? b. How much previous experience has she had in experiments of this type? c. How often does she claim to hear something when no sound is present? d. Is she also able to detect extremely weak visual stimuli?
What did the United State Surgeon General say about cigarette smoking?
A. There is a safe level of smoking-about 1-2 cigarettes a day. B. Nicotine is less addictive than caffeine. C. A healthier cigarette should be developed. D. Smoking is the most important health issue of our time.
According to the American Psychological Association’s guidelines, research animals ____
a. may be euthanized in accordance with veterinary standards b. must be provided with housing, food, and veterinary care until their natural end c. may be killed only after individual review and certification of need d. may not be killed
Freud proposed that the psychic structure of the unconscious could be revealed by a patient's
a. dreams. c. superego. b. ego. d. defenses.