Empirical studies of firms within industries consistently report substantial heterogeneity in measures of performance such as size and productivity. This paper explores the consequences of joint heterogeneity on the supply side (sellers) and the demand side (buyers) in international trade using...

We develop a new analytical framework for both cross-border services trade and services trade through foreign affiliates, based on heterogeneous firms operating under oligopoly. This leads to direct predictions about choice of services delivery (mode of delivery) at the firm level, and about the...

International trade models typically assume that producers in one country trade directly with final consumers in another. In the real world, of course, trade can involve long chains of potentially independent actors who move goods through wholesale and retail distribution networks. These...

Working with a panel dataset of of OECD countries over the decade 1994-2004, we examine linkages between cross-border trade and FDI in the service sectors. We first develop a consistent analytical framework for the application of the gravity model jointly to services trade and commercial...

This paper reviews the empirical evidence on firm heterogeneity in international trade. A first wave of empirical findings from micro data on plants and firms proposed challenges for existing models of international trade and inspired the development of new theories emphasizing firm...

Most of the large tariff reductions achieved in multilateral trade negotiations have involved tariff-cutting formulas such as the ‘Swiss’ formula. Wide variations in initial tariff rates between active participants, however, call for new approaches under the Doha Development Agenda. This...

Protection unconstrained by rules often varies substantially over time. Rules-based disciplines, such as WTO tariff bindings and bindings on market access in services, constrain this variability. We examine the theoretical effects of such constraints on the expected cost of protection and offer...

We examine the role of political factors in Mexico’s anti-dumping regime, considering both the characteristics of target countries subject to anti-dumping duties and industry-specific factors for sectors receiving protection. Our results are broadly consistent with the recent theoretical...

We work with a panel of bilateral trade flows from 1988 to 2002, exploring the influence of infrastructure, institutional quality, colonial and geographic context, and trade preferences on the pattern of bilateral trade. We are interested in threshold effects, and so emphasize those cases where...

In this paper we provide an economic assessment of the Uruguay Round agreements on tariffs, textiles and clothing, and agriculture, highlighting scale economies, imperfect competition, and dynamic linkages between trade, incomes, and investment. We present estimates of the welfare effects of the...