What policy objective should a common central bank in a heterogeneous monetary union pursue? Should it base its decisions on the EU-wide average of inflation and growth or should it instead focus on (appropriately weighted) national rates of inflation and growth? We find that a central bank that...

We study the transmission of monetary shocks across euro-area countries using a dynamic factor model and high-frequency identification. We develop a methodology to assess the degree of heterogeneity, which we find to be low in financial variables and output, but significant in consumption,...

As early as 2010, at the outset of the sovereign debt crisis, Daniel Gros and Thomas Mayer argued that Europe needed a European Monetary Fund (EMF). In the meantime, the European Stability Mechanism (ESM) has been created, which performs the function of an EMF. It was critical in containing the...

Should a common central bank in a heterogeneous monetary union base its decisions on EU-wide averages of economic variables or on national welfare losses? A central bank that minimizes the sum of national welfare losses reacts less to common shocks. Under certain parameter constellations this...