"Si él lo necesita" (if he really needs it) was the most common argument given by the subjects who accepted the zero offer in the ultimatum game during experiments were conducted among illiterate (adult) gypsies in Vallecas, Madrid. Interestingly the acceptance of the zero offer was not a rare...

This paper analyzes the way in which men and women are expected to behave differently in an experimental situation. To do so, we concentrate on a single topic: altruism. Since the dictator game provides the most suitable design for studying altruism and generosity in the lab setting, we use a...

Limited attention has been devoted on how (real-life) social networks are elicited and mapped, even less from the viewpoint of mechanism design. This paper surveys the few mechanisms that have been proposed by the experimental literature to this purpose. These mechanisms differ in their...