Self-Image and Strategic Ignorance in Moral Dilemmas∗

Avoiding information about adverse welfare consequences of self-interested decisions, or strategic ignorance, is an important source of corruption, anti-social behavior and even atrocities. We model an agent who cares about self-image and has the opportunity to learn the social benefits of a personally costly action. The trade-off between self-image concerns and material payoffs can lead the agent to use ignorance as an excuse, even if it is deliberately chosen. Two experiments, modeled after Dana, Weber, and Kuang (2007), show that a) many people will reveal relevant information about others ’ payoffs after making an ethical decision, but not before, and b) some people are willing to pay for ignorance. These results corroborate the idea that Bayesian self-signaling drives people to avoid inconvenient facts in moral decisions