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Monetary Union in West Africa and Asymmetric Shocks: A Dynamic Structural Factor Model Approach

By Romain Houssa

Abstract

We analyse the costs of a monetary union in West Africa by means of asymmetric aggregate demand and aggregate supply shocks. Previous studies have estimated the shocks with the VAR model.We discuss the limits of this approach and apply a new technique based on the dynamic factor model.The results suggest the presence of economic costs for a monetary union in West Africa because aggregate supply shocks are poorly correlated or asymmetric across these countries. Aggregate demand shocks are more positively or less negatively correlated between West African countries. These conclusions imply some policy recommendations for the monetary union project in West Africa.Asymmetric Shocks, Monetary Union, Factor Model

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