Mamoru Kaneko University of Tsukuba, Institute of Policy and Planning Sciences Institute of Policy and Planning Sciences University of Tsukuba Japan kaneko@sk.tsukuba.ac.jp http//infoshako.sk.tsukuba.ac.jp/~kaneko/ Biographical Sketch: Primary Research Focus : JEL Areas : C7:Game Theory and Bargaining Theory:General D0:Microeconomics: General