This paper is now published in the Review of Economic Studies
We characterize trade policies that result from political competition when assessments of wellbeing include both material and psychosocial components. The material component reflects, as usual, satisfaction from consumption. Borrowing from social identity theory, we take the psychosocial component as combining the pride and self-esteem an individual draws from the status of groups with which she identifies and a dissonance cost she bears from identifying with those that are different from herself. In this framework, changes in social identification patterns that may result, for example, from increased income inequality or heightened racial and ethnic tensions, lead to pronounced changes in trade policy. We analyze the nature of these policy changes.