Information and consumer fraud in a signalling model
This article considers a two-sided private information model. We assume that two exogenously given qualities are offered in a monopolistic market. Prices are ¿xed. A low quality seller chooses to be either honest (by charging the lower market price) or dishonest (by charging the higher price). We discuss the signaling role of the consumer’s private information on the equilibrium level of dishonesty, incidence of fraud and trade. We demonstrate that the equilibrium incidence of fraud is nonmonotonic in the buyer’s private information when the prior belief favors the low-quality seller strongly enough. This result holds as long as information is noisy and regardless of its private or public nature. Welfare consequences are ambiguous.
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