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The Market for Quacks

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Author Info
RAN SPIEGLER

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Abstract

A group of "n""quacks" plays a price-competition game, facing a continuum of "patients" who recover with probability "α", whether they acquire a quack's "treatment". If patients chose rationally, the market would be inactive. I assume, however, that patients choose according to a boundedly rational procedure, which reflects "anecdotal" reasoning. This element of bounded rationality has significant implications. The market for quacks is active, and patients suffer a welfare loss which behaves non-monotonically w.r.t. "n" and "α". In an extended model that endogenizes the quacks' choice of "treatments", the quacks minimize the force of price competition by offering maximally differentiated treatments. The patients' welfare loss is robust to market interventions, which would crowd out low-quality firms in standard models. Thus, as long as the patients' quality of reasoning is not lifted above the anecdotal level, ordinary competition policies may be ineffective. Copyright 2006 The Review of Economic Studies Limited.

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File URL: http://www.blackwell-synergy.com/doi/abs/10.1111/j.1467-937X.2006.00410.x
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Publisher Info
Article provided by Blackwell Publishing in its journal Review of Economic Studies.

Volume (Year): 73 (2006)
Issue (Month): 4 (October)
Pages: 1113-1131
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Handle: RePEc:bla:restud:v:73:y:2006:i:4:p:1113-1131

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  3. Ariel Rubinstein & Rani Spiegler, 2005. "Money Pumps in the Market," Levine's Bibliography 122247000000000941, UCLA Department of Economics. [Downloadable!]
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This page was last updated on 2009-11-22.


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