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Women less trusting when given testosterone

26th May 2010

A study in the Proceedings of the National Academy of Sciences has indicated that women who are open and trusting become more shrewd and less trusting when given testosterone.

When researchers asked adult women to rate the trustworthiness of photos of strangers' faces they found the hormone testosterone, normally linked to competition and dominance, made the most socially naive women more vigilant. But, according to the results, it had no effect on women naturally less trusting. Previous research has shown that the peptide hormone oxytocin increases trust in humans.

 

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