In the more than two decades we’ve spent advising boards, investors, and chief executives themselves on CEO transitions, we have seen a fundamental disconnect between what boards think makes for an ideal CEO and what actually leads to high performance. That disconnect starts with an unrealistic yet pervasive stereotype, which is shaped in large part by the official bios of Fortune 500 leaders. It holds that a successful CEO is a charismatic six-foot-tall white man with a degree from a top university, who is a strategic visionary with a seemingly direct-to-the-top career path and the ability to make perfect decisions under pressure.