First Author:   Christopher Snyder George Washington University csnyder@gwu.edu   Department of Economics, George Washington University, 2201 G Street, N.W. Washington, 20052, USA   202-994-6581(Phone) 202-994-6581(Fax) http://home.gwu.edu/~csnyder/ Second Author: Suzanne Robblee Northeastern University su.robblee@neu.edu   Department of Economics, 301 Lake Hall, Northeastern University Boston, 02115, USA   617-373-2887(Phone) 617-373-3640(Fax)