First Author:   Yang-Ming Chang Department of Economics, Kansas State University ymchang@ksu.edu   Department of Economics, Kansas State University, 319 Waters Hall Manhattan, 66506-4001, U.S.A.   (785) 532-4573(Phone) (785) 532-4573(Fax) Second Author: Kyle Ross Department of Economics, Kansas State University kdr8383@ksu.edu   Department of Economics, Kansas State University, 322 Waters Hall Manhattan, 66506-4001, U.S.A.   (785) 532-7357(Phone) (785) 532-6919(Fax)