Which conclusion has been drawn concerning the research on testosterone and aggression?
a. Individuals who have high baseline levels of testosterone tend to be more aggressive than average.
b. Testosterone only increases in response to aggression.
c. Testosterone is not involved in aggression among females.
d. There is little psychologists can do to prevent aggression in high-testosterone individuals.
Answer: A
Rationale: Testosterone levels rise in competitive contexts, and people who have particularly strong fluctuation in testosterone levels during competition may behave more aggressively.
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