Does testosterone make men more likely to start businesses? According to Roderick White, Stewart Thornhill and Elizabeth Hampson of the University of Western Ontario, the answer is "yes".

They measured the testosterone levels of 31 male MBA students who had been involved in starting new businesses with 79 male MBA students who had never been involved in starting new businesses. They found that the students with entrepreneurial experience had higher testosterone levels. In addition, there was a relationship between testosterone levels and the odds of having entrepreneurial experience after they separated out the effects of the subjects' age, race, undergraduate degree, risk taking propensity, and the time of day that the testosterone levels were measured.