Fehr, Ernst; Fischbacher, Urs - EconWPA - 2004
economic payoff is unaffected by the norm violation, may be willing to enforce these norms although the enforcement is costly … for them. Almost two-thirds of the third parties indeed punished the violation of the distribution norm and their … punishment increased the more the norm was violated. Likewise, up to roughly 60% of the third parties punished violations of the …