1. Weatherhead School of Management, Case Western Reserve University, Cleveland, Ohio 44106;
2. INSEAD, 77300 Fontainebleau, France;
3. Centre for Economic Policy Research, London EC1V 0DX, United Kingdom;
4. Jindal School of Management, University of Texas at Dallas, Richardson, Texas 75080;
5. Carlson School of Management, University of Minnesota, Minneapolis, Minnesota 55455;
6. McDonough School of Business, Georgetown University, Washington, District of Columbia 20057