Adults spend about ____ of their time sleeping in REM; whereas, infants spent about ____ of their time sleeping in REM
a. 5%; 20%
b. 10%; 30%
c. 15%; 40%
d. 20%; 50%
D
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Why did cognitive dissonance cause participants to shift their attitudes to become more favorable toward the boring tasks?
A. $20 was a reward that made the tasks more enjoyable. B. $1 was not enough motivation to lie, so participants justified the lying by believing the lies. C. Very few people would change their attitudes for only a dollar. D. $20 (when this study was conducted) was a lot of money, so participants were more than willing to say they had changed their attitudes.
By the age of 3 months, most infants are able to
a. distinguish a parent's face from the face of a stranger. b. pick up a toy from a basket and put it back. c. sit up alone without support. d. speak well enough to be understood.
Which of the following areas of the brain is most abnormal in PTSD?
a. Locus coeruleus b. Hippocampus c. Cingulate gyrus d. Amygdala
The variance is equal to
a. the standard deviation squared b. the square-root of the standard deviation c. twice the standard deviation d. none of these