Recent estimates of the percentage of IQ variance associated with genetic factors range from approximately __________%
a. 10-30
b. 0-5
c. 50-80
d. 85-100
C
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The most common health problem associated with physical activity is
a. diabetes b. sleep apnea c. high cholesterol d. injury
After having children, marital satisfaction tends to decline more for women than for men.
a. true b. false
The final step of a mediational analysis tests whether the association of X and Y
A) increases when the mediator is taken into account. B) decreases when the mediator is taken into account. C) is larger than the association of X with the mediational variable. D) is smaller than the association of X with the mediational variable.
Measuring how many times a person bites their nails in a two-hour period is an example of
a. a nominal variable. b. a quantitative variable. c. a reactive measure. d. a psychophysiological measure.