inconsistent behavior, typically attributed to "other regarding preferences." The Ultimatum Game, used to study fairness, and the … accounting for both the evolution of fairness and the evolution of trust. Here I explore the role of population structure by … trusting and trustworthy trustworthy and reduces the critical return threshold, but, much like in the case of fairness, it does …

attribution. In our experiment, the pure luck defines the allocation of the roles. Still, compared to a standard setting, in a …