The Fable of the Keiretsu

Yoshiro Miwa (miwa@e.u-tokyo.ac.jp) and John Ramseyer

No CIRJE-F-109, CIRJE F-Series from CIRJE, Faculty of Economics, University of Tokyo

Abstract: Central to so many accounts of post-war Japan, the keiretsu corporate groups have never had economic substance. Conceived by Marxists committed to locating "domination" by "monopoly capital," they found an early audience among western scholars searching for evidence of culture-specific group behavior in Japan. By the 1990s, they had moved into mainstream economic studies, and keiretsu dummies appeared in virtually all econometric regressions of Japanese industrial or corporate structure. Yet the keiretsu began as a figment of the academic imagination, and they remain that today. The most commonly used keiretsu roster first groups large financial institutions by their pre-war antecedents. It then assigns firms to a group if the sum of its loans from those institutions exceeds the amount it borrows from the next largest lender. Other rosters start by asking whether firm presidents meet occasionally with other presidents for lunch. Regardless of the definition used, cross-shareholdings were trivial even during the years when keiretsu ties were supposedly strongest, and membership has only badly proxied for "main bank" ties. Econometric studies basing "keiretsu dummies" on these rosters have produced predictably haphazard results: some are a function of misspecified equations, while others depend on outlying data points and some are specific to one keiretsu roster but not others. The only reliably robust results are the artifacts of the sample biases created by the definitions themselves.

Pages: 36 pages
Date: 2001-03
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Citations: View citations in EconPapers (12)

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Related works:
Book: The Fable of the Keiretsu (2006)
Journal Article: The Fable of the Keiretsu (2002)
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