The stereotype of an uber-masculine, greedy dictator may be a function of hormones, according to new research that identifies high testosterone levels as a cause of selfishness in those who have power.
Researchers at Switzerland's University of Lausanne developed a two-pronged experiment to see how participants would distribute a given amount of prize money to their followers when placed in hypothetical leadership roles. They found that the leaders who were given more followers tended to hang on to more money.
In the second part of the experiment, researchers took mouth swabs of the participants and frequently remind them of a survey — taken weeks before the experiment — that determined what the majority of people believed to be a fair distribution of money. Here's what happened next, from The Atlantic: