In The Big Problem of Small Change, Sargent and Velde apply a cash-in-advance model to the history of coinage and to contemporary thought about coinage. They assert that their model accounts for puzzling observations involving the depreciation and disappearance of small coins. I question its...

This paper looks at two features of globalization, namely productivity improvements and falling trade costs, and explores their effect on welfare in a monopolistic competition model with heterogeneous firms and technological asymmetries. Contrary to received wisdom, and for reasons unrelated to...