1. Krannert School of Management; Purdue University; West Lafayette Indiana 47907 USA
2. Mendoza College of Business; University of Notre Dame; Notre Dame Indiana 46556 USA
3. College of Management; National Chiao Tung University; Hsinchu 300 Taiwan
4. Michael G. Foster School of Business; University of Washington; Seattle Washington 98195 USA
5. School of Economics and Management; Tsinghua University; Beijing China