ALLAN R. COHEN is the Edward A. MaddenDistinguished Professor of Global Leadership at Babson College. He has consulted on organizational change and leadership at a wide variety of organizations, including GE, Polaroid, IBM, and Fidelity, and holds MBA and DBA degrees from Harvard Business School.DAVID L. BRADFORD is the Eugene O'Kelly Senior Lecturer in Leadership, Emeritus and Director of the Executive Program in Leadership at Stanford Graduate School of Business. He has consulted for a wide array of companies, including Frito-Lay, Levi Strauss & Co., Raychem, Genentech, and AutoDesk, as well as the Whitney Museum of American Art.