Across many studies, a comparison of "black-white" IQ test scores shows that
a. the means are equal.
b. the black mean is higher than the white mean.
c. the black variance is equal to the white variance.
d. the within-group variance is larger than the between-group variance.
e. the between-group variance is greater than the within-group variance.
d. the within-group variance is larger than the between-group variance.
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Disruption of the circadian rhythm for adult humans may result in ______
a. a basic change in the rhythm b. a way to quickly overcome jet lag c. fatigue and irritability d. a reversion to infant sleep patterns
After Mrs. Keech's doomsday predictions failed, her followers suddenly became interested in convincing others they were right. This strong need to maintain consistency in their beliefs by attracting additional followers is predicted by the theory
a. social exchange b. attribution c. cognitive dissonance d. compliance