As a society, we have this perception that women are emotional. The research, however, tells us that, on trading floors, that poor risk rises and falls with testosterone levels, and these trading floors are 85 percent, 90 percent male, and these gentlemen tend, under periods of stress, to show off for each other. That's dangerous.
One might think of investment managers as astronomers and CEOs as astronauts. The two roles are radically different with distinct personality traits. Like astronomers, investment managers tend to be introverted, skeptical, and very analytical. CEOs, like astronauts, are the exact opposite, typically being extroverts, optimists, and, well, leaders.