Arbeitspapier

Informational cascades elicit private information

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 thruthtelling 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.

Language
Englisch

Bibliographic citation
Series: WZB Discussion Paper ; No. SP II 2004-19

Classification
Wirtschaft
Externalities
Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
Subject
Cheap Talk
Information Externality
Informational Cascades
Social Learning
Herd Behaviour

Event
Geistige Schöpfung
(who)
Gossner, Olivier
Melissas, Nicolas
Event
Veröffentlichung
(who)
Wissenschaftszentrum Berlin für Sozialforschung (WZB)
(where)
Berlin
(when)
2004

Handle
Last update
10.03.2025, 11:42 AM CET

Data provider

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Object type

  • Arbeitspapier

Associated

  • Gossner, Olivier
  • Melissas, Nicolas
  • Wissenschaftszentrum Berlin für Sozialforschung (WZB)

Time of origin

  • 2004

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