Morning testosterone levels can predict a male stock traders successes for a day; more testosterone, more risk taking and more profit. Sometimes, that is. But stress can up the cortisol level and end up with a lethal combination. Lethal, that is, to rational decision making. From Nicholas Kristoff:
Yet the same study also suggested that elevated testosterone levels could lead to greater assumption of risk; high testosterone levels “may shift risk preferences and even affect a trader’s ability to engage in rational choice.” In other words: when male traders crash … boy, they crash.
And some people worry about the effects of so-called PMS in the work environment!
The study is just one study, but it is published in the prestiguous Proceedings of the National Academy of Sciences.