First Author:   David Wettstein Ben-Gurion University of the Negev wettstn@bgumail.bgu.ac.il   Department of Economics, Ben-Gurion University of the Negev Beer-Sheva, 84105, Israel   972-8-6472291(Phone) 972-8-6472291(Fax) Second Author: Israel Luski Ben-Gurion University of the Negev luski@bgumail.bgu.ac.il   Department of Economics, Ben-Gurion University of the Negev Beer-Sheva, 84105, Israel   972-8-6472290(Phone)   Third Author: Todd Kaplan University of Exeter Dr@ToddKaplan.com   Department of Economics, Streatham Court, Rennes Dr. Exeter, EX4-1LF, England   44-1392-263237(Phone)   http://www.toddkaplan.com