General Equilibrium Effects of Trade Liberalization in ECOWAS Countries: Structural Gravity Approach

Abstract

This study estimates the general equilibrium effects of the Economic Community of West African States (ECOWAS) free trade agreement, established in 1990, using the structural gravity model. Following the Anderson et al. (2015) methodology, we used country fixed effects as a proxy for multilateral resistance terms, which are considered as general equilibrium trade costs, to estimate the effects of regional trade liberalization on the ECOWAS member countries welfare. This study used data on 45 partners’ industrial trade flows from 1980 to 2006. The results indicate that trade liberalization has had positive effects on ECOWAS members welfare, via consumer or producer welfare channels. The latter channel induces an important change in real GDP relative to the former channel-countries with higher levels of producer welfare than consumer welfare experience greater changes in real GDP