INFORMATIONAL CASCADES ELICIT PRIVATE INFORMATION *

Olivier Gossner and Nicolas Melissas

International Economic Review, 2006, vol. 47, issue 1, 297-325

Abstract: We introduce cheap talk in a dynamic investment model with information externalities. We first show how social learning adversely affects the credibility of cheap talk messages. Next, we show how an informational cascade makes truth-telling incentive compatible. A separating equilibrium only exists for high-surplus projects. Both an investment subsidy and an investment tax can increase welfare. The more precise the sender's information, the higher her incentives to truthfully reveal her private information. Copyright 2006 by the Economics Department Of The University Of Pennsylvania And Osaka University Institute Of Social And Economic Research Association.

Date: 2006
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Working Paper: Informational cascades elicit private information (2006)
Working Paper: Informational cascades elicit private information (2003)
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