This papers contains a survey of the recent literature devoted to the returns to schooling within a dynamic structural framework. I present a historical perspective on the evolution of the literature, from early static models set in a selectivity framework (Willis and Rosen, 1979) to the recent...

Measures of urban productivity are typically positively associated with city population. But is this relationship causal? We discuss the main sources of bias in the proper identification of agglomeration effects. We also assess a variety of solutions that have been proposed in the literature to...

We wish to thank Andrea Bassanini, Cecilia Garcia-Peñalosa, Tommy Murphy, Tommaso Nannicini and seminar participants at University Bocconi for useful comments and discussions. Charlotte Coutand and Clement Malgouyres provided excellent research assistance. We also thank Pierre-Emmanuel Couralet...