In general, if the variance of the difference scores increases, what will happen to the value of the t statistic?
a. It will increase in magnitude (move farther toward the tail of the distribution).
b. It will decrease in magnitude (move toward 0 at the center of the distribution).
c. It will stay the same; the t statistic is not affected by the variance of the difference scores.
d. It may increase or may decrease; there is no consistent relationship between variance and the size of the t statistic.
B
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According to research, in contrast to adolescent mothers who keep their babies, those who have abortions are more likely to
a. suffer severe psychological damage. b. be better off economically. c. drop out of high school. d. have strong family support.
What is the self-perpetuating cycle in conduct disorder?
a. A genetic predisposition leads to a low IQ and difficult temperament, which leads to poor parenting and an insecure attachment, which leads to conduct disorder. b. A genetic predisposition leads to a difficult temperament, which leads to behavior problems, which lead to parental overindulgence and lack of discipline, which leads to conduct disorder. c. A genetic predisposition leads to an easy temperament but because of abusive parents, this leads to depression which in turn leads to conduct disorder. d. A genetic predisposition leads to an easy temperament, which leads to parental neglect, which leads to anxiety, which leads to conduct disorder.