Research on childbearing reveals that
A) fertility problems do not increase for men between ages 25 and 45.
B) fertility problems among women do not show any increase until age 40.
C) reproductive technologies are equally successful among younger and older parents.
D) a 40-year-old man is less fertile than a 25-year-old man.
Answer: D
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Dr. Meyers is a behavioral geneticist. She is investigating whether school achievement has a genetic component. Which of the following scenarios would indicate to her that there is a large genetic component?
a. Dizygotic twins show greater similarities in school achievement than siblings born 2 years apart. b. Adopted children show great similarities in school achievement to their adopted parents than their biological parents. c. Monozygotic twins show greater similarities in school achievement than dizygotic twins. d. Siblings born 2 years apart show greater similarities in school achievement than dizygotic twins.
Milgram defended the ethics of his research by noting that
a. he sought expert advice from psychiatrists on possible participant behaviors before he started the research. b. his participants delivered only mild shocks to the learner in the study. c. compensatory followup showed that at the end of the study, participants experienced negative effects but that the effects had disappear within two years. d. the dependent attitude of the participants would protect them from any negative effects of taking part in the study.