The aim of this study is to compare empirical performance of traditional as well as Divisia monetary aggregates. This evidence comes from the comparison of their relative performance in terms of real GDP and inflation within 1992.1 and 2007.4. For this purpose, the study uses in-sample and out-of-sample approaches. The in-sample approach focuses on variance decomposition analysis. Concerning out-of-sample analysis, a forecasting model is estimated through 2003:4 and forecast are generated for the period 2004:1-2007:4. The study leads to the following results. Inflation and real GDP are better explained respectively by Divisia M2 and simple sum M2 in BEAC. In BCEAO, the contribution of each monetary aggregate to the fluctuations of inflation and real GDP is very worst except simple sum M2 in explaining price level. Considering the forecasting ability, it appears that at the narrowest level of aggregation, there is no difference between the two types of monetary aggregates in the two Central Banks. At the broader level, Divisia M2 has a slight edge over traditional M2 in predicting real GDP in BEAC. In BCEAO, simple sum M2 dominates Divisia M2 in explaining inflation.
JEL Classification: B22 C32 C43 C53 E52