Imperfect Product Testing and Market Size

Charles Mason and Frederic P Sterbenz

International Economic Review, 1994, vol. 35, issue 1, 61-86

Abstract: The authors consider an imperfect test of product quality and ask how it interacts with adverse selection to affect market size. Although one might expect adverse selection to be mitigated, there are scenarios where it is exacerbated. Also, two counterintuitive comparative static results emerge. First, a small increase in the test cost can increase the equilibrium expected profits earned by sellers of higher quality units and so expand the market. Second, the equilibrium expected profits earned by sellers with lower quality units can be increased by a small improvement in the accuracy of an imperfect test. Copyright 1994 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.

Date: 1994
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