1. Management and Human Resources Department; HEC Paris; Jouy-en-Josas France
2. School of Management; Boston University; Boston Massachusetts U.S.A.
3. Business School; University of Michigan; Ann Arbor Michigan U.S.A.
4. Sauder School of Business; University of British Columbia; Vancouver BC Canada
5. Stephen M. Ross School of Business; University of Michigan; Ann Arbor Michigan U.S.A.