I am Professor of Economics at Boston University and a Research Fellow of the CEPR in London and Paris. My research and teaching interests are in economic theory, especially as applied to understanding organizations, industries, inequality, and economic development.

I am a Fellow of the Econometric Society, a Fellow of BREAD, and a co-founder and past President of ThReD.

Before arriving at BU, I was Professor of Economics at University College London and held posts at Columbia and Northwestern. I have also had visiting positions at Harvard, Princeton, the Institute for Advanced Study, Yale and Brown.