A study by Kendler and his colleagues involving twins was designed to investigate the etiology of depression. What was one of the major conclusions?
a. Genetics plays a small role in depression.
b. The environment plays a major role in depression.
c. Genetic factors seem to influence the effect the environment may have on depression.
d. Twins are relatively immune from depression as a result of the close bond that they form with each other.
Answer: c.
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At a dinner party, you hear someone make the following statement: "Religion doesn't do any good for anyone. Religious people are no healthier, and die at the same ages as do nonreligious people." According to the evidence given in the text, how should you
a. "You're right. The research evidence shows no relationship between religion and health." b. "The research allows an even stronger statement: highly religious people are actually less healthy than are irreligious people." c. "You're quite wrong. The research evidence shows that religious people are healthier and live longer." d. "You can't make that statement. There is no research evidence one way or the other about the relationship between religious involvement and health."
Health, for research purposes, is usually determined by:
A) medical tests. B) rating forms completed by physicians. C) a review of the participant's medical chart. D) an evaluation by the participant.