A Laboratory Investigation of Networked Markets

Alessandra Cassar, Daniel Friedman and P.H. Schneider

Economic Journal, 2010, vol. 120, issue 547, 919-943

Abstract: When contracts are not perfectly enforceable, can interpersonal networks improve market efficiency? We introduce certain exogenous networks into laboratory markets in which traders can cheat in 'international' but not in 'domestic' transactions. We examine four network configurations, one of which has the potential to achieve 100% efficiency. Theoretical upper bounds correctly predict the main qualitative trade patterns across our network configurations but overpredict observed efficiency. Our networks increase international trade volume, reduce domestic volume and divert high surplus transactions to international networks. Copyright © The Author(s). Journal compilation © Royal Economic Society 2009.

Date: 2010
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