 Bicchieri and Xiao (2009) designed an experiment to investigate what happens when empirical and normative expectations conflict. To that end, participants in a dictator game were exposed to different pieces of information. Specifically, two groups of dictators were given some “descriptive information”; that is, they were told what other subjects had done in another session (i.e., one group was told that previous participants had made for the most part a generous offer, while the other group was told that most participants had made a selfish offer). Further, another two groups of dictators were given some “normative information”; that is, they were told what previous subjects said ought to be done (i.e., one group was told that most previous participants thought that one should make a generous offer, while the other group was told that most participants thought that one should make a selfish offer). Other groups were given both descriptive and normative information. The experimental results show that—whenever such information did not conflict—both descriptive and normative messages had a significant influence on dictators’ own expectations and subsequent choices. When messages conflicted in that one indicated generosity and the other indicated selfishness, only the descriptive information affected dictators’ behavior. This suggests that if people recognize that others are breaching the norm, then they will no longer feel compelled to follow the relevant rule of behavior themselves.