The Hausman test is used in applied economic work as a test of misspecification. It is most commonly thought of (wrongly some would say) as a test of whether one or more explanatory variables in a regression model is endogenous. There are several versions of the test available with modern...

This dissertation consists of three essays that focus on a Bayesian estimation of stochasticcost frontiers for electric generation plants. This research gives insight into the changingdevelopment of the electric generation market and could serve to inform both private investmentand public policy...

Stein-rule estimators, also known as shrinkage estimators, combine sample and non-sample information in a way that improves the precision of the estimation process or the quality of subsequent predictions. A Stein-rule estimator is a weighted average of a restricted and an unrestricted...

This dissertation investigates the role of fiscal policy on economic activity by analyzing the response of major macroeconomic variables to innovations to the average marginal income tax rate (AMTR) measures in the U.K. by employing vector autoregressive (VAR) models. We identify these...

In this work, we begin with an investigation into the temporal correlation in default risk. We first establish a link between the dynamics of house price changes and the dynamics of default rates in the Gaussian copula framework by specifying a time series model for a common risk factor. We show...

In a general linear model, it is shown that all admissible linear estimators are limits of linear estimators that are uniquely best at some point in an extended parameter set. The principal result shows that a linear estimator that is uniquely best at a point W2 among multiple linear estimators...

This dissertation examines corporate use of derivative instruments and multi-period hedging methods. It studies the use of linear (e.g. futures) and nonlinear (e.g. options) derivatives in a sample of 382 U.S. non-financial firms (920 firm-year observations) between 1992 and 1996. It also...