This paper provides evidence on the unit root hypothesis and long-term growth by allowing for two structural breaks. We reject the unit root hypothesis for three-quarters of the countries approximately 50% more rejections than in models that allow for only one break. While about half of the...

In a sample of 110 countries over the period 1960-2009, we document a positive relation between the volatility and skewness of growth in the cross-section. The relation holds regardless of initial level of economic development and of subsequent long-run growth rate. We argue that this novel...

We extract aggregate supply and aggregate demand shocks for the US economy from macroeconomic data on inflation, real GDP growth, core inflation and the unemployment gap. We first use unconditional non-Gaussian features in the data to achieve identification of these structural shocks while...

This paper provides evidence on the unit root hypothesis and long-term growth by allowing for two structural breaks. We reject the unit root hypothesis for three-quarters of the countries approximately 50% more rejections than in models that allow for only one break. While about half of the...

Implied volatility indices should have information about risk parameters, once they are cleansed of the influence of normal volatility dynamics and macro-economic uncertainty. Building on intuition from the dynamic asset pricing literature, we uncover unobserved risk aversion and fundamental...

We estimate the time-varying distribution of aggregate supply (AS) and aggregate demand (AD) shocks defined in the Keynesian tradition. In modeling the time variation in higher order moments, we distinguish between traditional Gaussian uncertainty and "bad" uncertainty, associated with negative...