The relationship between inflation and economic growth has been controversial within economic thought. However, in evolution of this debate, we come to a consensus which conciliates the divergences and suggests that it exists a threshold effect of inflation. Monetary policy makers in West African Economic and Monetary Union (WAEMU) has chosen 3% as the target of inflation which involves a particular leading of this policy. In this thesis, we investigate on the optimal inflation in WAEMU by assessing his threshold level on this area. Applying Hansen’s (1999) threshold model, we estimate this optimal rate to 8%.
Keywords : inflation-economic growth-threshold
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