Offloading punishment to karma: Thinking about karma reduces the punishment of transgressors

Punishment and the threat thereof can help enforce social norms, but enacting punishment is often costly. To avoid these costs, individuals may prefer to offload the responsibility of punishment to others or to cultural institutions. We propose that shared beliefs about supernatural punishment contribute to minimizing the costs of interpersonal punishment by allowing people to offload punishment to supernatural entities. In a Third Party Punishment Game, we specifically test in a pre-registered experiment ( N = 1603 Americans and Singaporeans adults, recruited through Qualtrics' online panels) whether thinking about karma (a supernatural force that punishes misdeeds) reduces punishment. Results confirm that being prompted to consider karma reduces inclinations to punish selfishness in a Third Party Punishment Game. A second pre-registered study using a subtler prime of karma replicated this effect. These findings suggest that karma beliefs may have played a role in the cultural evolution of human cooperation by reducing the costs of human norm enforcement while maintaining incentives for prosocial behaviour through the threat of supernatural punishment.