The correlation between the IQs of biological parents and their offspring reared
apart is about .20. For identical twins reared apart, it is
(a) zero, because they do not vary at all
(b) about the same as that of biological parents and their offspring reared apart
(c) high, about .70
(d) perfect, that is 1.0, otherwise they would not be identical
C
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Suppose that two political candidates—Candidate A and Candidate B—run a series of negative advertisements about one another. Research suggests that ____
a. both candidates are likely to be rated more positively than they were before b. both candidates are likely to be rated more negatively than they were before c. people are more likely to say they will vote d. people are more likely to take the election seriously and follow it closely
Ron and Jon are identical twins, but only Jon shows the symptoms of schizophrenia. Brain imaging techniques are most likely to show that Jon has ____
a. more brain tissue than Ron b. smaller than normal ventricles c. higher cerebral glucose metabolism d. ventricle enlargement
You develop a new measure of honesty and you find that people who score high on your measure show more honest behavior than people who score low. You have demonstrated ____
a. concurrent validity b. divergent validity c. predictive validity d. reliability
Most empirical studies of projective tests have found all of the following EXCEPT
a. they have poor reliability. b. they have low validity. c. they don't discriminate well between people with mental disorders and those without. d. scores seem especially sensitive to test takers' moods. e. test takers tend to refer to the therapist when they tell stories about the cards.