"This paper considers a variety of econometric models for the joint distribution of US stock and bond returns in the presence of regime switching dynamics. While simple two- or three-state models capture the univariate dynamics in bond and stock returns, a more complicated four state model with...

"Most intervention studies have been silent on the assumed structure of the economic system--implicitly imposing implausible assumptions--despite the fact that inference depends crucially on such issues. This paper proposes to identify the cross-effects of intervention with the level and...

"This paper examines the technical efficiency of U.S. Federal reserve check processing offices over 1980-2003. We use new unconditional quantile estimator of efficiency that avoids some drawbacks of other recently proposed estimators. The new estimator is fully non-parametric, robust with...