Bradley Ruffle Ben-Gurion University   Department of Economics P.O. Box 653 Ben-Gurion University Beer Sheva, 84105 Israel   bradley@bgumail.bgu.ac.il   http://econ.bgu.ac.il/facultym/bradley/       Primary Research Focus: Experimental Economics   JEL Areas: C9 : Design of Experiments: General D0 : Microeconomics: General