Which of the following statements is supported by research on crying?
A) Fatigue is the most common cause of infant crying.
B) Newborns often cry at the sound of another crying baby.
C) Crying peaks at 12 weeks and then steadily declines.
D) Nearly all infants show signs of colic in the first few months of life.
B
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Most American adults say that teenage sexual activity
A) is being eliminated by abstinence education programs. B) is only natural and to be expected. C) is wrong. D) is greatly exaggerated by the media.
Dr. Smart conducted a study that examined the physiological reactions of rats reared in isolation to the introduction of a stranger rat in their cage
She wanted to examine the effects of growing up in isolation on social behavior in order to understand more about social phobia in humans. This study is an example of a) an analogue experiment. b) a correlational design. c) an experimental design. d) none of the above.