What do Ultimatum Games (UG) tell us about human behavior? How relevant is the evidence collected by UG experiments for questioning the rationality assumption? What type of evidence do Henrich et. a1. provide in the \"In Search of Homo Economicus\" paper regarding the sources of behavior observed in the UG experiments? Describe any other eld experiment setting we talked about in the class. How is that similar to/ different than the abovementioned research? Explain