Comparative Advantage and Heterogeneous Firms

Working Paper: NBER ID: w10668

Authors: Andrew B. Bernard; Stephen Redding; Peter K. Schott

Abstract: This paper presents a model of international trade that features heterogeneous firms, relative endowment differences across countries, and consumer taste for variety. The paper demonstrates that firm reactions to trade liberalization generate endogenous Ricardian productivity responses at the industry level that magnify countries' comparative advantage. Focusing on the wide range of firm-level reactions to falling trade costs, the model also shows that, as trade costs fall, firms in comparative advantage industries are more likely to export, that relative firm size and the relative number of firms increases more in comparative advantage industries and that job turnover is higher in comparative advantage industries than in comparative disadvantage industries.

Keywords: No keywords provided

JEL Codes: F11; F12; L11


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Trade costs decrease (F11)Firms in comparative advantage industries are more likely to export (F14)
Firms in comparative advantage industries are more likely to export (F14)Increased relative firm size and number of firms in these industries (L19)
Trade liberalization (F13)Job turnover is higher in comparative advantage industries than in disadvantage industries (J63)
Trade liberalization (F13)Average productivity of industries rises due to reallocation of economic activity from lower-productivity to higher-productivity firms (O49)

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