I study various topics in microeconomics with a focus on models of information and how individuals interact in dynamic settings. My research explores questions related to learning under model misspecification, discrimination, information aggregation, moral hazard and the econometrics of randomized experiments. My work on discrimination has both theoretical and empirical components, and builds on my research on learning under model misspecification. My work in the other four areas is theoretical, and includes applications to designing rating systems, information campaigns and committees, and providing incentives in online labor markets.