In the use of randomized controlled designs, as internal validity increases,
A) external validity increases.
B) external validity decreases.
C) efficacy decreases.
D) effectiveness increases.
B
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In one study of 16 couples, the wives had to lie in an MRI machine, periodically receiving a mild but stressful electric shock on their ankles. During the procedure,
some women received a touch on the hand from a stranger; others held hands with their husbands. What general principle can be drawn from the results of this study? a. Touch can be comforting, but it does not actually reduce stress and anxiety activity in the brain. b. Any human touch reduces pain and negative emotions equally. c. The touch of a loved one is more effective than that of a stranger in stressful situations. d. Being touched by a stranger makes things worse in a stressful situation.
Neurons that carry information from the senses to the spinal cord are called __________
a) motor neurons. b) interneurons. c) sensory neurons. d) reflexes.
Which approach to personalitydoes the MMPI use?
A) types B)behaviors C) traits D) situationism
The research of Paul Ekman and Wallace Friesen found that __________ are universally found in as many as 32 different cultures
a. hand gestures b. pheromones c. facial expressions d. physical postures