My research focuses on three main areas. The first concerns issues of inequality, social mobility and the political economy of redistribution, as well as their interactions with growth and development. The second centers on education finance, stratification and the socioeconomic structure of cities. The third and most recent concerns the links between economics and psychology (“behavioral economics”). I study in particular the phenomenon of motivated beliefs (overconfidence, wishful thinking, identity, etc.), the interplay of extrinsic incentives and intrinsic motivation, the determinants of prosocial behavior, and the cause and consequences of collective beliefs such as groupthink and ideology.