A group of professors from Harvard Business School, the London School of Economics, Columbia University, and the University of Oxford pondered the same question and conducted a survey of more than 1,000 CEOs in six countries to find out what they’re doing and how that behavior relates to the success or failure of their companies. Their findings were published in the Harvard Business Review. ... “You are more likely to find CEOs that are leaders in larger companies that are more complex,” says study coauthor Raffaella Sadun, associate professor of business administration at Harvard Business School. “Manager CEOs are often found in smaller, simpler organizations.”

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