Jorge Pena obtained his Ph.D. in Economics with honors from the U.N.E.D in 2009 and his M.A. in Industrial Organization and Markets in 2005 from the Universidad Carlos III. Professor Pena has worked as consultant for The World Bank Group (Washington DC, US) from 2005 to the present time, being his main task the analysis of the quality of the business environment in developing countries. Pena’s research interest is in the intersection of three areas: empirical industrial organization, development economics and applied microeconometrics. His most recent and active line of research covers the topics of firms’ productivity and international integration in the context of heterogeneous firms models. He has also worked on data quality issues, Bayesian multiple imputation and endogenous selection in right hand side variables. Professor Pena has taught undergraduate econometrics at the Universidad Carlos III, The World Bank, Universidad Complutense de Madrid and Universidad Politécnica de Madrid.