Article,

Comportements collectifs dans les réseaux d'influence sociale

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Annales d'Éco. \& Stat., (2004)

Abstract

Social influence plays a significant role in lots of economic situations (Becker, 1991, about restaurants, Valente, 1995, on diffusion of innovations, or Topol, 1991, for the functioning of financial markets). Yet, this externality is not always unilateral. Does social influence always impact individual behaviors in the sense of social cohesion or can it entail antagonist phenomena? On the basis of a simple threshold model, we suggest that positive retroactions induced by social influence can originate both unanimity and diversity in individual behaviors, and we rely this to the structure of the influence network. Particularly, we develop a s…(more)

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