Badi H. Baltagi is distinguished Professor of Economics, and Senior Research Associate at the Center for Policy Research, The Maxwell School, Syracuse University. He received his Ph.D. in Economics at the University of Pennsylvania in 1979. He is also part-time Chair in Economics, University of Leicester, and was a visiting Professor at the University of Arizona and the University of California, San Diego. He is the author or editor of many books and articles that have appeared in the leading economics and statistics journals.