The enlargement of the European Monetary Union is likely to lead to an increase of uncertainty about the transmission of monetary policy for the larger union. Adding new members to the central bank council will in addition imply that the preferences of the enlarged council will be uncertain in...

This paper examines the role of uncertainty shocks in a one-sector, representative-agent dynamic stochastic general equilibrium model. When prices are flexible, uncertainty shocks are not capable of producing business cycle comovements among key macro variables. With countercyclical markups...

The paper examines the monetary-fiscal interactions in a monetary union model with uncertainty due to imperfect central bank transparency. We first show that monetary uncertainty disciplines fiscal policymakers and thereby reduces taxes, average inflation and output distortions. However, as more...