Professor Miller is a social psychologist interested in various aspects of intergroup and interpersonal relations. His current research focuses on four questions: (1) What are the origins and consequences of people's false beliefs about the opinions, feelings, and practices of their peers? (2) What social psychological consequences follow from the belief that self-interest should and does exert a powerful influence over individual and group behavior? (3) When do people feel licensed to express opinions or take actions that have negative consequences for others? and (4) How do people's interpretations of disagreements between themselves and others differ when they belong to different as opposed to similar cultural groups?