We estimate a structural model of heterogeneous multiproduct firms to examine the sources of firm heterogeneity emphasized in the recent trade and macro literatures. Using Nielsen barcode data on prices and sales, we estimate elasticities of substitution within and between firms, and use the...

This paper examines the frequency, pervasiveness, and determinants of product switching by US manufacturing firms. We find that one-half of firms alter their mix of five-digit SIC products every five years, that product switching is correlated with both firm- and firm-product attributes, and...

A startling fact of firm level productivity analysis is the large and persistent differences in both labour productivity and total factor productivity (TFP) between firms in narrowly defined sectoral classes. The competitiveness of an industry is potentially an important factor explaining this...

Much of recent Trade theory focuses on heterogeneity of firms and the differential impacttrade policy might have on firms with different levels of productivity. A common problem isthat most firm level dataset do not contain information on output prices of firms which makesit difficult to...

We offer a new explanation as to why international trade is so volatile in response to economic shocks. Our approach combines the uncertainty shock idea of Bloom (2009) with a model of international trade, extending the idea to the open economy. Firms import intermediate inputs from home or...

An important element of the cost of distance is time taken in delivering final and intermediate goods. We argue that time costs are qualitatively different from direct monetary costs such as freight charges. The difference arises because of uncertainty. Unsynchronised deliveries can disrupt...

Andy Rose (2000), followed by many others, has used the gravity model of bilateral trade on a large data set to estimate the trade effects of monetary unions among small countries. The finding has been large estimates: Trade among members seems to double or triple, that is, to increase by...

Why do major economic powers seek more and more free trade agreements (FTAs) with smaller partners? Recently, Japan has joined the bandwagon by signing its first bilateral FTA. The decision, highly contested domestically, represents a sea change in Japanese trade policy and a challenging case...

We survey the micro and macro literature on the impact of Information and Communication Technologies (ICTs) on productivity. The “Solow Paradox” of the absence of an impact of ICT on productivity no longer holds, if it ever did. Both growth accounting and econometric evidence suggest an...

We provide an analysis of the 2008-2009 trade collapse using microdata from a small open economy,Belgium. First, we find that changes in firm-country-product exports and imports occurred mostly atthe intensive margin: the number of firms, the average number of destination and origin markets...