Economists have long puzzled over the astounding differences in productivity between firms and countries. For example, looking at disaggregated data on U.S. manufacturing industries, Syverson (2004a) found that plants at the 90th percentile produced four times as much as the plant in the 10th...

This review article tries to answer four questions: (i) what are the stylized facts about uncertainty over time; (ii) why does uncertainty vary; (iii) do fluctuations in uncertainty matter; and (iv) did higher uncertainty worsen the Great Recession of 2007-2009? On the first question both macro...

Should raising the growth rate of GDP per capita be a policy goal of governments in general, and of the British government in particular? Many people would say no, for the following reasons: 1) GDP is hopelessly flawed as a measure of welfare; 2) Growing GDP is pointless since most people don't...