Munich Personal RePEc Archive

Comparative Advantage and Trade Patterns

Broll, Udo and Gilroy, Bernard Michael (1986): Comparative Advantage and Trade Patterns.


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In the pure theory of international trade the foundation of commodity exchange is based upon differences in autarky relative prices. The theory of comparative advantage attempts to precisely define this foundation by formulating a systematic relationship between the pattern of comparative advantages and the combination of international commodity trade. The purpose of this paper is to demonstrate the validity of a weak form of the law of comparative advantage, that is, that the pattern of international trade is determined by comparative advantage. The following elucidates the relationship between comparative advantages and international trade patterns with the aid of the revenue and expenditure function, the so-called duality approach.

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