Many view the period after the Second Industrial Revolution as a paradigm of a transition to a new economy following a technological revolution, including the Information Technology Revolution. We build a quantitative model of diffusion and growth during transitions to evaluate that view. With a...

The empirical evidence on rational inattention lags the theoretical developments: micro evidence on one of the most immediate consequences of observation costs--the infrequent observation of state variables--is not available in standard datasets. We contribute to filling the gap using new...

International relative prices across industrialized countries show large and systematic deviations from relative purchasing power parity. We embed a model of imperfect competition and variable markups in a quantitative model of international trade. We find that when our model is parameterized to...