This paper extends Bresnahan's market power measure, which can be estimated econometrically, to marketing firms that have potential for price discrimination. An investigation of Japanese soyabean markets during 1973-78 using the model reveals an episode in which Japanese importers exercised some market power for several years after the US soyabean embargo of June 1973. An analysis of welfare loss and exchange rate transmission is also presented.
International Association of Agricultural Economists
Ohno, Konomi and Gallagher, Paul, "Measuring Market Power for Marketing Firms: The Case of Japanese Soyabean Markets" (1992). Economics Technical Reports and White Papers. 23.