James Schummer Kellogg Graduate School of Management, Northwestern   MEDS, Kellogg GSM 2001 Sheridan Road Northwestern University Evanston, IL 60208 USA   schummer@kellogg.nwu.edu   http://www1.kellogg.nwu.edu/facdir/facpage.asp?sid=833           JEL Areas: C7 : Game Theory and Bargaining Theory:General D7 : Analysis of Collective Decision-Making: General