Phil Rosenzweig is a Professor of Business Administration at IMD in Lausanne, Switzerland, where he has used 12 Angry Men for many years to teach executives about interpersonal behavior and group dynamics. He is author of The Halo Effect . . . and the Eight Other Delusions That Deceive Managers, an award-winning book that has been translated into fourteen languages. He received his Ph.D. from the Wharton School, University of Pennsylvania.