FEEM working papers "Note di lavoro" series
2006 .073

On The Economic Value of Repeated Interactions Under Adverse Selection

Authors: Lorenzo Rocco, Ottorino Chillemi, Benedetto Gui
Series: Climate Change and Sustainable Development
Editor: Carlo Carraro
Keywords: Adverse Selection,Group Stability,Altruism
JEL n.: D64,D71,D82


The paper studies, in a repeated interaction setting, how the presence of cooperative agents in a heterogeneous community organized in groups affects efficiency and group stability. The paper expands on existing literature by assuming that each type can profitably mimic other types. It is shown that such enlargement of profitable options prevents group stabilization in the single group case. Stabilization can be obtained with many groups, but its driver is not the efficiency gain due to the presence of cooperative individuals. Rather, stabilization is the result of free riding opportunities.

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