This book contains cutting-edge discussions of the full range of methodologies used in assessing the potential effects of non-tariff policies on trade liberalization. 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 are presented. The full range of polices under discussion in current trade negotiations, including trade facilitation, services policies, quantitative measures, customs procedures, standards, movement of natural persons, and anti-dumping are also covered. Contributors to the volume, in addition to the editors, include 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 (U.S. International Trade Commission). For the policymaker, Quantitative Methods brings together a wide selection of the most current findings on the potential effects of liberalizing non-tariff measures and improving trade facilitation. For the empirical practitioner, in-depth discussions are provided of issues often covered lightly elsewhere, such as data sources, construction of indices, and neglected microeconomic foundations of liberalization.