This book is a collection of important contributions by Japanese researchers and their coauthors to present current advances in behavioral economics and finance, particularly in relation to decision making and human well-being. The topics covered in this volume include decision making under the conditions of inter-temporal choices, risk and social relations, happiness and the neuro-scientific/biological basis of behavior. The book includes works of research, both theoretical and empirical, on time discounting, time preferences, risk aversion, altruism, social status, happiness, addiction,...