Book excerpt: The field of behavioral economics has contributed greatly to our understanding of human decision making by refining neoclassical assumptions and developing models that account for psychological, cognitive, and emotional forces. The field’s insights have important implications for law. This Research Handbook offers a variety of perspectives from renowned experts on a wide-ranging set of topics including punishment, finance, tort law, happiness, and the application of experimental literatures to law. It also includes analyses of conceptual foundations, cautions, limitations and proposals for ways forward.