Which of the following is a change in primary sex characteristics that takes place during puberty?
A) Growth of the breasts
B) Changing voice pitch
C) Growth of pubic hair
D) Growth of the uterus
D
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When the goal of research is to establish a cause-and-effect relationship, the only method available is . . .
a. Collecting many observations b. Observing a correlation between the cause and the effect c. Observing that when the cause is absent, the effect is absent d. None of the above
A nurse elicits fear and anxiety as a result of being present when a child received a shot. If this same nurse is paired with a thermometer, the child may also learn to fear the thermometer. This situation demonstrates
a. higher order conditioning. b. operant conditioning. c. spontaneous recovery. d. vicarious conditioning.
Tim and Amy are listening to their TV surround-sound system. They are impressed with the low tones of the grizzly bear in the movie that they are watching. Tim and Amy are happy with the __________ of sound.
A. timbre B. frequency C. amplitude D. frequency and amplitude
The ethical concern regarding expert witnesses is about whether they are really
A. paid. B. expensive. C. recognizable. D. reliable.