Critics are attacking the researchers saying creating the monkey was unnecessary and will have no benefits, but supporters say monkeys give researchers a better idea of how human diseases develop than do mice or other lab animals. Researchers in Germany think fluctuating hormones may be to blame. Women were given spatial tests during various times of the month. The result was that women did better on spatial tests during the menstrual phase of their cycle. Researchers credit the score to a higher level of testosterone at this time.
Women still score higher on verbal skills tests than men.
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