JOSHUA GREENE is John and Ruth Hazel Associate Professor of the Social Sciences and the director of the Moral Cognition Laboratory in the Department of Psychology, Harvard University. Author, Moral Tribes: Emotion, Reason, And The Gap Between Us And Them. The Conversation: https://www.edge.org/panel/joshua-greene-the-role-of-brain-imaging-in-social-science-headcon-13-part-vi