Michael I. Norton is a social psychologist, author, and professor at Harvard Business School. He is known for his work on the psychology of happiness, decision-making, and spending behavior. Norton's research often focuses on how individuals can improve their own happiness and on the dynamics of prosocial behavior, such as how people can spend money in ways that make them happier. He has co-authored the book "Happy Money: The Science of Smarter Spending" with Elizabeth Dunn, where they explore the relationship between how we spend money and our emotional well-being. Norton's work extends to a wide array of social and economic concerns, making him a prominent figure in the field of behavioral science.