As tariffs have fallen worldwide, the increasing importance of non-tariff policies for further trade liberalization has become widely recognized. The methods for assessing the potential effects of such liberalization have lagged significantly behind those available for analyzing tariffs. This book is the first volume that comprehensively addresses this gap. It has been designed to be useful for both economists and policymakers, especially for those involved in communicating ideas and results between economists and policymakers. This indispensable book contains cutting-edge discussions of the full range of methodologies used in this area, including business surveys, summary statistics such as effective rates of protection and price gaps, time-series and panel econometrics, and simulation methods such as computable general equilibrium. It covers the entire spectrum of policies under discussion in current trade negotiations, including trade facilitation, services policies, quantitative measures, customs procedures, standards, movement of natural persons, and anti-dumping. Some prominent contributors to this book are Bijit Bora (World Trade Organization), John Wilson, Tsunehiro Otsuki and Vlad Manole (World Bank), Catherine Mann (Institute of International Economics), Alan Deardorff and Robert Stern (University of Michigan), Joe Francois (Erasmus University), Dean Spinanger (University of Kiel), Antoni Estevadeordal and Kati Suominen (Inter-American Development Bank), Thomas Prusa (Rutgers University), Thomas Hertel and Terrie Walmsley (Purdue University), Scott Bradford (Brigham Young University), Judith Dean, Robert Feinberg, Soamiely Andriamananjara and Marinos Tsigas (US International Trade Commission).