Addiction in networks

Frédéric Deroïan () and Philippine Escudie ()
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Frédéric Deroïan: AMSE - Aix-Marseille Sciences Economiques - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique
Philippine Escudie: AMSE - Aix-Marseille Sciences Economiques - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique

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Abstract: This paper develops a dynamic model of addiction on networks, where individuals' consumption is shaped by peer influence. We analyze the longrun effects of social interactions by characterizing steady-state consumption as a function of both network position and forward-looking behavior. We also examine the welfare implications of network structure and evaluate the effectiveness of various public policies aimed at reducing the demand for addictive goods. In particular, we study a key-player policy—modeled as a targeted rehabilitation program—that leverages the network's interpersonal influences to maximize impact.

Keywords: Addiction; Peer Network; rational addiction; time-inconsistency (search for similar items in EconPapers)
Date: 2025-03-26
Note: View the original document on HAL open archive server: https://hal.science/hal-05007080v1
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