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Federal Reserve Bank of San Francisco
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Monetary policy in a small open economy with a preference for robustness
Richard Dennis
Kai Leitemo
Ulf Söderström
Abstract

We use robust control techniques to study the effects of model uncertainty on monetary policy in an estimated, semi-structural, small-open-economy model of the U.K. Compared to the closed economy, the presence of an exchange rate channel for monetary policy not only produces new trade-offs for monetary policy, but it also introduces an additional source of specification errors. We find that exchange rate shocks are an important contributor to volatility in the model, and that the exchange rate equation is particularly vulnerable to model misspecification, along with the equation for domestic inflation. However, when policy is set with discretion, the cost of insuring against model misspecification appears reasonably small.


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Richard Dennis & Kai Leitemo & Ulf Söderström, Monetary policy in a small open economy with a preference for robustness, Federal Reserve Bank of San Francisco, Working Paper Series 2007-04, 2007.
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Keywords: Monetary policy
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