This paper argues that the crisis was an outcome of EMU: setting a common monetary policy for countries with different initial inflation rates. The crisis countries were those with high inflation rates which then had negative real interest rates and consequently over-borrowed. Current policy...

This paper proposes a new methodology for generating sovereign credit ratings. These are determined by mapping the probability that the debt-GDP ratio might exceed a maximum debt limit at some point in the future into a credit rating. The debt limit can be either ad hoc or based on the financial...

This paper explores the implications of time varying volatility for optimal monetary policy and the measurement of welfare costs. We show how macroeconomic models with linear and quadratic state dependence in their variance structure can be used for the analysis of optimal policy within the...