PPE major offers an interdisciplinary education that combines broad and rigorous training in the foundations of our allied disciplines. Apart from taking some basic courses in Psychology, Philosophy, Politics, and Economics, each PPE major is required to specialize in a concentration of their choice. Each concentration tends to focus a bit more on a subset of the four constituent PPE disciplines: psychology, philosophy, economics, or political science. For example, students choosing the Distributive Justice concentration will focus on both factual and evaluative questions about the existence and working of just institutions, and what obligations individuals or groups have toward one another. Distributive Justice focuses more on Political Philosophy, though students are encouraged to take courses in legal studies, politicial science and economics that bear on questions of distributive justice. Students choosing the Choice and Behavior concentration, by contrast, will tend to focus more on modeling, explaining, or predicting individual and social behavior, and are encouraged to include classes in Psychology, Economics, but also Sociology and Political Science.