Book excerpt: Market Imperfections and Macroeconomic Dynamics is based upon a collection of papers originally presented at the 5th Theory and Methods in Macroeconomics (T2M) meeting in Paris, France, 2002. The contributions in this volume focus on a central theme: the aggregate dynamic consequences of market imperfections. Such effects are of great interest to researchers in macroeconomics as these imperfections play a primary role in the persistence of aggregate output, the characteristics of the business cycles and the interactions of agents over time. Incorporating up-to-date techniques and methods, these contributions exemplify the remarkable progress made by macroeconomists in tackling these issues. The primary market for Market Imperfections and Macroeconomic Dynamics is academic researchers in economics and graduate students specializing in macroeconomics. Divisions of economic studies in public administration and in financial organizations will also find this book beneficial.