Since the earliest days of philosophy, thinkers have debated the meaning of the term happiness and the nature of the good life. But it is only in recent years that the study of happiness—or “hedonics”—has developed into a formal field of inquiry, cutting across a broad range of disciplines and offering insights into a variety of crucial questions of law and public policy. Law and Happinessbrings together the best and most influential thinkers in the field to explore the question of what makes up happiness—and what factors can be demonstrated to increase or decrease it. Martha Nussbaum offers an account of the way that hedonics can productively be applied to psychology, Cass R.