My research investigates how the human mind uses principles of strategy to solve problems in the social world. Much of my work has focused on moral condemnation, especially the functions of third-party judgment, moralistic punishment, and moral impartiality. Another research program examines how people form alliances, how they choose their loyalties to others, and how they display and conceal loyalties. A third project looks at the psychological foundations of our sense of ownership by using a virtual environment to observe resource disputes in the laboratory. Most recently, I have been designing interactive economic games to study political behavior and institutions, including redistribution of wealth, social safety nets, pay discrimination, and voters' selfish and cooperative choices.
