Department of Economics Working Paper Series http://www.econ.lsa.umich.edu/wpweb Unequal Treatment of Identical Agents in Cournot Equilibrium: Private and Social Advantages Stephen Salant and Greg Shaffer Working Paper 96-03 DEPARTMENT OF ECONOMICS University of Michigan 611 Tappan St./ 238 Lorch Hall Ann Arbor, MI 48109-1220