A number of studies have documented a reduction in aggregate macroeconomic volatility beginning in the early 1980s, i.e., the quot;Great Moderation.quot; This paper documents the Great Moderation at the state level, finding significant heterogeneity in the timing and magnitude of states'...

In this paper, we develop a Bayesian approach to counterfactual analysis of structural change. Contrary to previous analysis based on classical point estimates, this approach provides a straightforward measure of estimation uncertainty for the counterfactual quantity of interest. We apply the...