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Monetary Policy Responses to Exogenous Perturbations: The Case of a Small Open Economy (2007-2018)

Christopher Warburton and Emerson Jackson ()

PSL Quarterly Review, 2020, vol. 73, issue 293, 181-201

Abstract: While autonomous central banks in large open economies are usually predisposed to use monetary rules to target inflation, output, and long-term interest rates, central banks in small open economies face peculiar challenges in their attempts to attain and maintain liquidity, stable prices and full employment. This paper investigates the effects of monetary policy in the case of Sierra Leone, assuming that information for rule-based monetary policy is insufficient and imprecise. We use the Bayesian model to evaluate primitive (priors), posterior enhancements and responses of key variables to exogenous perturbations based on information from 2007 to 2018. We find that the effects of disturbances that are associated with crude oil prices have a more persistent effect on national output than the dominant monetary instrument (T-Bills). The response of monetary policy to exogenous perturbations is generally weak and less persistent. Granger-causality tests reveal that internal conditions make it less likely for the central bank to robustly react to external shocks.

Keywords: Cointegration; Bayesian VARS; Inflation; Impulse response; Money supply; Oil shocks (search for similar items in EconPapers)
JEL-codes: E42 E47 E50 E52 (search for similar items in EconPapers)
Date: 2020
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