We use univariate GARCH models of inflation and output growth and monthly data on inflation and output growth in the G7 for the 1960-2000 period to examine all possible causal relationships between inflation, output growth, real, and nominal uncertainty, and hence test for a number of economic...

We examine the relationship between inflation and inflation uncertainty using a GARCH model that allows for simultaneous feedback between the conditional mean and variance of inflation. We also derive a number of theoretical econometric results and illustrate the relevance of these results with...

We use a long series of annual data that span over 100 years to examine the relationship between output growth and output growth uncertainty in five European countries. Using the GARCH methodology to proxy output growth uncertainty, we obtain two important results: First, more uncertainty about...