Men are far likelier than women to take risks like these and to feel comfortable doing so. Geoff Trickey, managing director of Psychological Consultancy Limited, a group of business psychologists, studied risk-taking behavior in over seventy-five hundred people and found that risk takers who are both impulsive and fearless were twice as likely to be men as women. On the flip side, female risk takers were roughly twice as likely to be more wary and judicious than men.