First Author:   François Langot GAINS-TEPP, ERMES, Cepremap and IZA flangot@univ-lemans.fr   ENS, PSE-Jourdan, Cepremap, 48 boulevard Jourdan Paris, 75014, France       http://www.univ-lemans.fr/~flangot/ Second Author: Coralia Quintero-Rojas Universidad de Guanajuato and GAINS-TEPP coralia@ugto.org   School of Economics, Universidad de Guanajuato, UCEA - Campus Marfil Guanajuato, 36250, Mexico