The ultimatum game models social exchange in situations in which the rational motive to maximize gains conflicts with fairness considerations. Using two independent behavioral measurements, the authors tested two contradicting predictions: that the preference for fairness is a deliberative...

Many experiments have shown that human subjects do not necessarily behave in line with game theoretic assumptions and solution concepts. The reasons for this non-conformity are multiple. In this paper we study the argument whether a deviation from game theory is because subjects are rational,...