On 10.04.2015, Dr. David Castells-Quintana successfully defended his doctoral thesis "Three Empirical Essays on Concentration of Resources and Economic Growth", supervised by Dr. Vicente Royuela, in the Sala de Graus at the Faculty of Economics and Business. Dr. Andres Rodriguez-Pose, Dr. Raul Ramos, and Dr. Gustavo Marrero composed the Doctoral Committee. 

David’s dissertation consists of three empirical studies focusing on two major world trends in modern economic development, namely increasing agglomeration and rising inequalities within countries. The thesis seeks to contribute to the understanding of the evolution of both trends and their impact on long-run economic growth, by making use of multiple techniques for data analysis and in light of the relevant theory and policy debate.