In regard to the biological determination of homosexuality,
A) there are no differences between the concordance levels of monozygotic versus dizygotic twins in the occurrence of homosexuality.
B) there is no evidence that sexual orientation is influenced by biological factors.
C) some functional and structural brain differences have been found when comparing the brains of homosexual with heterosexual men.
D) it is clear that sexual orientation is completely biologically determined.
C
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Evidence in support of the biological understanding of generalized anxiety is supported by the finding that:
A) relatives of people with generalized anxiety are more likely to have it than nonrelatives. B) distant relatives of those with generalized anxiety are more likely to have it than close relatives. C) relatives share not only biological characteristics, but also similar environments. D) identical twins have more similar environments than fraternal twins.
One factor that makes predictive validity studies difficult to conduct is that they require:
A) selecting employees on the basis of predictors other than those to be validated. B) involvement of incumbents in the initial test administration. C) participation of a large applicant pool. D) highly complex statistical analyses.