Articles

Informational externalities and emergence of consensus

D. ROSENBERG, E. Solan, N. VIEILLE

Games and Economic Behavior

July 2009, vol. 66, n°2, pp.979-994

Departments: Economics & Decision Sciences, GREGHEC (CNRS)

Keywords: Studies, Externality, Economic models, Game theory


We study a general model of dynamic games with purely informational externalities. We prove that eventually all motives for experimentation disappear, and provide the exact rate at which experimentation decays. We also provide tight conditions under which players eventually reach a consensus. These results imply extensions of many known results in the literature of social learning and getting to agreement.


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