" Our research indicates that of the six leadership styles, the authoritative one is most effective, driving up every aspect of climate. Take clarity. The authoritative leader is a visionary; he motivates people by making clear to them how their work fits into a larger vision for the organization. People who work for such leaders understand that what they do matters and why. Authoritative leadership also maximizes commitment to the organization’s goals and strategy. "

― Harvard Business School Press , HBR's 10 Must Reads on Managing People (with featured article “Leadership That Gets Results,” by Daniel Goleman)