We present evidence from a laboratory experiment that individuals who feel having been treated unfairly in the interaction with others are more likely to cheat in a subsequent, unrelated game. We interpret this result as showing that the violation of a social norm (fairness) by others can be...

We study loyalty in groups that are exogenously assigned based on members' performances in a task. We observe that in-group bias is strong and significant among subjects who score high in performance, and that it is weak and insignificant among those who score low. This asymmetric pattern is...