Table of Contents

Handbook on International Trade Policy

Handbook on International Trade Policy

Elgar original reference

Edited by William A. Kerr and James D. Gaisford

The Handbook on International Trade Policy is an insightful and comprehensive reference tool focusing on trade policy issues in the era of globalization. Each specially commissioned chapter deals with important international trade issues, discusses the current literature on the subject, and explores major controversies. The Handbook also directs the interested reader to further sources of information.

Chapter 5: Modeling Approaches to the Analysis of Trade Policy: Computable General Equilibrium and Gravity Models

Olena Ivus and Aaron Strong

Subjects: economics and finance, international economics


Olena Ivus and Aaron Strong Introduction Gravity models and computable general equilibrium (CGE) models are the most commonly used analytical techniques to perform a quantitative analysis in the area of trade policy. These models provide a consistent economy-wide picture that can be very beneficial to policy makers. Both CGE and gravity models have the advantages of general equilibrium approaches in examining a great variety of questions. In the partial equilibrium models of international trade the focus is on one sector of the economy with the crosssector effects being disregarded. General equilibrium modeling, in turn, takes explicit account of the consequences that a policy change in one sector has on other sectors of the economy. The gravity model is a popular empirical approach to trade that has been used widely for analyzing the impact of different trade policy issues on bilateral trade flows between different geographical entities. This model takes an ex-post approach to perform trade policy analysis. Gravity models measure the effect on trade flows of a past trade policy. By contrast, CGE modeling takes an ex-ante approach, which involves quantifying the future effects of a new policy. In addition, gravity models only explain the pattern of bilateral trade and do not provide direct estimates of welfare costs. CGE models, on the other hand, are generally used to quantify the impact of a change in trade policy on countries’ welfare levels and the distribution of income across multi-country regions. The main goal of this...

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