1. C. T. Bauer College of Business, University of Houston, Houston, Texas 77204;
2. School of Economics and Management, Tsinghua University, 100084 Beijing, China;
3. Carlson School of Management, University of Minnesota, Minneapolis, Minnesota 55455;
4. École des hautes études commerciales de Paris (HEC Paris), 78350 Jouy-en-Josas, France;
5. W. P. Carey School of Business, Arizona State University, Tempe, Arizona 85287