“Si él lo necesita”: Gypsy fairness in Vallecas
在马德里巴列卡斯文盲吉普赛人中进行最后通牒博弈实验，发现接受零出价是常见行为，而97%的提议者选择平分。
Abstract “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 (strategy method) during experiments conducted among illiterate (adult) gypsies in Vallecas, Madrid. Interestingly the acceptance of the zero offer was not a rare case but, in contrast, was the modal value. This is even more remarkable if we consider that the 97% of the subjects proposed the equal split.