Glossary
Moral licensing
What is moral licensing?
Moral licensing occurs when good conduct or a sense of being a moral person makes a later questionable choice feel acceptable. Someone might treat a donation as permission to be dishonest later, or use a record of fair behavior to dismiss concerns about a new decision. This is often called the licensing effect. Self-licensing has a broader use, too: progress toward a goal can become a reason to allow an indulgence that has nothing to do with morality.
Competing explanations
Merritt, Effron, and Monin’s review distinguishes moral credits, where a good deed seems to offset a bad one, from moral credentials, where past conduct changes how an ambiguous later act is interpreted. These are proposed explanations, not a single established unconscious mechanism.
Imagine a manager who points to a history of supporting fair hiring and says, “This rejection can't be biased. Look at my record.” The earlier conduct is being used to dismiss one interpretation of the new decision. It does not “pay for” a choice the manager accepts was unfair; it helps the manager see that choice as fair in the first place. This illustrates the credentials explanation. It does not tell us whether the rejection was actually fair.
A moral licensing example
Someone might say, “I gave to charity this week, so it is fine to keep the extra change the cashier handed me.” The earlier donation is being used to excuse the later act. This illustrates the moral-credit explanation; it is not a prediction that donors generally behave dishonestly.
The licensing effect beyond morality
“I exercised today, so I've earned a treat.” That can be a self-licensing argument: the earlier action supplies permission for a choice the person would otherwise resist. But having a treat is not automatically a lapse, overeating, or a failure to meet a goal. The important part is the reason for the choice, not a judgment about the food.
Consumer researchers have studied a related pattern. In Khan and Dhar's 2006 paper, Licensing Effect in Consumer Choice, committing to a virtuous act increased preference for a more indulgent option in their experiments. The authors proposed that the earlier choice improved people's view of themselves, making the indulgence easier to permit. That is a proposed explanation of those findings, not proof that buying something enjoyable is immoral.
Moral licensing, consumer indulgence, and ordinary goal pursuit therefore need not be identical. Across these versions of licensing, an earlier action or intention becomes a reason to allow a later choice. The evidence for one version does not establish the same effect in every setting.
Evidence and limits
A 2015 meta-analysis of 91 studies found a modest average licensing effect, with larger effects in published than unpublished studies. That difference warrants caution about the size and generality of the effect.
Good conduct can also be followed by more good conduct. The useful question is when a person treats an earlier action as a reason to relax a standard, and when it strengthens their commitment instead. The evidence does not make a later lapse inevitable.