The last three decades have witnessed an explosion of theoretical work on the organization of firms (Robert Gibbons and John Roberts, 2009). In parallel, there has been a massive increase in access to micro data which has revealed huge dispersions in productivity. For example, within narrow...

We document the presence of multiple and varied constraints to small and medium firm growth. This presents both a practical problem for business training programs and a challenge to academic economists trying to identify mechanisms though which these programs may affect outcomes. External...

A basic intellectual challenge for those concerned with the poverty of nations is to come to grips with the nature and causes of the wealth of the world's wealthier nations. One might then be in a position to inform the poorer nations how they might achieve similar outcomes. This paper is...