Higher levels of testosterone increase the tendency in men to rely on their intuitive judgments and reduce cognitive reflection -- a decision-making process by which a person stops to consider whether their gut reaction to something makes sense.
Researchers found that men given doses of testosterone performed more poorly on a test designed to measure cognitive reflection than a group given a placebo. The testosterone group also "gave incorrect answers more quickly, and correct answers more slowly than the placebo group," the authors write.
Caltech's Colin Camerer, the Robert Kirby Professor of Behavioral Economics and T&C Chen Center for Social and Decision Neuroscience Leadership Chair (says) "The testosterone is either inhibiting the process of mentally checking your work or increasing the intuitive feeling that 'I'm definitely right.'"
The research will appear in an upcoming issue of the journal Psychological Science.
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