Badi H. Baltagi is George Summey, Jr. Professor of Liberal Arts and Professor of Economics at Texas A & M University. He is a fellow and associate editor of the Journal of Econometrics, associate editor of Econometric Reviews, co-editor of Empirical Economics, and a recipient of the Multa Scripsit Award for Econometric Theory. Baltagi has published more than seventy articles in internationally recognized journals, and is the author of three books: Panel Data Analysis (1992), Econometric Analysis of Panel Data (1995), and Econometrics (second edition, 1999).