providing new evidence helpful for discriminating between different types of externalities. We investigate four-digit level … most important factor in the transmission of externalities. This suggests that transactions externalities accruing … primarily to the seller, and/or activity-driven demand externalities are significant for explaining the short-run behavior of …

) definition of aggregate productivity growth, which aggregates plant-level changes to changes in aggregate final demand in the … technologies, one for each 4-digit SIC code. On average we find positive aggregate productivity growth of 2.2% in this sector … for both the theoretical literature on growth and alternative indexes of aggregate productivity growth based only on …

The recent literature on local schooling externalities in the U.S. is rather mixed: positive external effects of … average education levels are hardly to be found but, in contrast, positive externalities from the share of college graduates … effect) of college educated workers. By contrast, as no externalities are associated with the traditional technology, high …

-level productivity and scale effects. I show here that the incorporation of theory-based endogenous markups into AGE models is not … variety (entry), firm scale (productivity), and markups (distortions) to welfare changes differ substantially among the three …

productivity. Our model extends basic Ricardian theory to accommodate many countries, geographic barriers, and imperfect … explain basic facts about U.S. plants: (i) productivity dispersion, (ii) the productivity advantage of exporters, (iii) the … examine counterfactuals to assess the impact of various global shifts on productivity, plant entry and exit, and labor …