The re-emergence of institutional economics in the final quarter of the twentieth century is one of the most important and fruitful developments in social science. In bringing together some of the most significant previously published papers by leading scholars in the field, this authoritative collection explores the major changes in the 'new' and 'old' institutional economics, the developments of new approaches and the extension of applications to new areas which have taken place since the early 1990s.This volume is a definitive collection of readings showing both changes in the research agenda and new developments at the cutting edge. It is an ideal reference source for students and researchers in the fields of economics, sociology, business and other related disciplines.