Affiliation: | a Kellogg School of Management, Northwestern University, 2001 Sheridan Road, Evanston, IL 60208, USA b School of Management, University of Texas at Dallas, P.O. Box 830688, Richardson, TX 75083-0688, USA c NUS Business School, National University of Singapore, BIZ 1, #04-20, 1 Business Link, Singapore 117592 |