国際的な規模の経済性と貿易理論

概要

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Over the past few decades a considerable number of studies have been conducted on the theory of international trade under imperfect competition. At the same time numerous attempts have been made by scholars to explain international economies of scale (or international returns to scale), which give rise to increasing returns at the world level rather than that of an individual country. The purpose of this paper is to synthesize the following models of international trade with the concept of international economies of scale : (1) the external economies (or external effects) model, (2) the contestable markets model, (3) the monopolistic competition model, (4) the oligopolistic competition model. Studies of the relationship between (1) and (4) have been superficial. We try to consider this more carefully and provide an interpretation that treats the procompetitive effect of trade with the existence of oligopolistic firms as demonstrating the existence of international economies of scale.
神戸大学の論文
1998-03-10