Thijs ten Raa is Lecturer in Economics at Utrecht University in the Netherlands. Professor ten Raa’s primary research area is economic theory. He has published twelve books, including the acclaimed The Economics of Benchmarking (Palgrave Macmillan, 2009) and the textbook Microeconomics (Palgrave Macmillan, 2013). He has published numerous articles in publications including Economics Letters, Journal of Economic Theory, Review of Economics and Statistics, International Economic Review, Review of Income and Wealth, Journal of Productivity Analysis, Journal of Banking and Finance, Journal of Economic Behavior and Organization and Oxford Economic Papers. William Greene is Professor of Economics at New York University Stern School of Business where he teaches courses in econometrics and statistics. Professor Greene’s primary research areas include econometrics and applied microeconomics; productivity andproduction economics, health econometrics, technical change and the entertainment industry. He has published numerous articles in publications including Econometrica, Economics Letters, American Economic Review, Journal of Econometrics, Journal of Economic Education, Economics Letters, Journal of Economic Perspectives, Review of Economics and Statistics and Journal of Political Economy. He is currently Editor-in-Chief for Journal of Productivity Analysis.