We derive a simple equation for the welfare gains from trade when tariffs are liberalized or iceberg trade costs fall. Covering various one-sector trade models that may or may not feature extensive margins and imperfect competition, we generalize the analysis of Arkolakis, Costinot and...

Recent quantitative trade models treat import tariffs as pure cost shifters so that their effects are similar to iceberg trade costs. We introduce revenue-generating import tariffs, which act as demand shifters, into the framework of Arkolakis, Costinot and Rodriguez-Clare (2012), and generalize...

The present paper aims to disseminate the validity of trade theories on the ground of the current international trade environment. The research objective consists in the reviewing of the traditional and new trade theories and their explanatory significance regarding the gains from trade issues....

This paper first investigates the pattern of trade and industrial productivity in the ASEAN, China, and India (ACI). By using highly disaggregated COMTRADE data during 1998-2008, I find that the ACI countries exhibit significant productivity growth in manufacturing sectors. Both international...

A deranged publisher decided to produce a volume of some of my papers and asked me to write some comments. Since these amount to a summary of my views about international trade theory over the latest forty years or so, I'm giving the comments a separate alternative existence as a discussion paper

This paper explores the quantitative consequences of transatlantic trade liberalization envisioned in a Transatlantic Trade and Investment Partnership (TTIP) between the United States and the European Union. Our key innovation is to develop a new quantitative spatial trade model and to use an...

Immigrants can foster host-country trade flows by using their information network. However, the heterogeneity in skill level and increasing diversification in terms of both origin and destination of the immigrants have added complexity to this issue. This paper examines the causal linkage...