Twin studies, to assess heritability of sexual orientation, found which of the following?
a) There is no heritability factor for sexual orientation.
b) Between fifty and sixty percent of identical twins were both homosexual if their twin was homosexual.
c) There was only a slight heritability factor, and only for men.
d) One hundred percent of identical twins were both homosexual if their twin was homosexual.
Answer: b
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Alice is 45 years old. Compared to her sensory abilities in her mid-20s, today she likely is better able to:
a. see close-up objects b. hear high-frequency sounds c. taste spicy foods d. see objects that are far away
Which of the following is NOT expected to significantly influence the way personality psychologists think about issues in the 21st century?
A) A decrease in the population of the planet B) More accurate control of environmental contingencies C) A better understanding of brain biochemistry D) A better understanding of the human genetic code