Norm nudging and twisting preferences

Public policies often involve “norm nudging”, the use of norm information to steer individual behavior in a prosocial direction. Analysis of social norm messaging often concentrates on the outcome measure: the potential change in behavior. The cognitive and psychological processes that underlie individuals’ response to norm information, especially the inferences they draw, are usually overlooked. This knowledge gap may lead to adverse consequences, such as messages backfiring. To (factually) justify norm nudging interventions, it is essential that policymakers understand the complex mechanisms that link context, social expectations and preferences, and how the interpretation of different types of messages affects behavior.