Mark is in a long-term, monogamous relationship; Karl is single and dates women occasionally; and Stephen has three girlfriends who all believe that he is monogamous. It is most likely that
A) all three men have similar testosterone levels.
B) Karl has the highest testosterone levels, followed by Stephen, and then Mark.
C) Stephen has the highest testosterone levels, followed by Karl, and then Mark.
D) Mark has the highest testosterone levels, followed by Stephen, and then Karl.

Question

Quizplus · Accepted Answer

Testosterone levels have been found to be higher in men who have multiple sexual partners or engage in more frequent sexual activity. Therefore, it is likely that Stephen, who has three girlfriends, has the highest testosterone levels among the three men. Karl dates women occasionally, so it is possible that his testosterone levels are higher than Mark, who is in a long-term, monogamous relationship. Therefore, the order would be Stephen, Karl, and then Mark.

Mark Is in a Long-Term, Monogamous Relationship; Karl Is Single