We study individuals who can choose how to compete with an opponent for one nonzero payoff. They can either nudge themselves into a fair set of rules where they have the same information and actions as their opponent, or into unfair rules where they spy, sabotage or fabricate their opponent's...

This paper experimentally analyzes the determinants of the honesty norm in a lying game. The findings confirm common gender differences, i.e., men cheat significantly more than women. We detect a novel correlation between subjects' magnitude of concern they have for others (social value...