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Phase Transitions In A Social Impact Model For Opinion Formation

Author

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  • CLELIA M. BORDOGNA

    (Instituto de Investigaciones Fisicoqímicas Teóricas y Aplicatas (INIFTA), Facultad de Ciencias Exactas, UNLP. Sucursal 4, Casilla de Correo 16, (1900) La Plata, Argentina)

  • EZEQUIEL V. ALBANO

    (Instituto de Investigaciones Fisicoqímicas Teóricas y Aplicatas (INIFTA), Facultad de Ciencias Exactas, UNLP. Sucursal 4, Casilla de Correo 16, (1900) La Plata, Argentina)

Abstract

A model for opinion formation in a social group, based on the Theory of Social Impact developed by Latané, is studied by means of numerical simulations. Interactions among the members of the group, as well as with a strong leader competing with the mass media, are considered. The model exhibits first-order transitions between two different states of opinion, which are supported by the leader and the mass media, respectively. The social inertia of the group becomes evident when the opinion of the leader changes periodically. In this case two dynamic states are identified: for long periods of time, the group follows the changes of the leader but, decreasing the period, the opinion of the group remains unchanged. This scenery is suitable for the ocurrence of dynamic phase transitions.

Suggested Citation

  • Clelia M. Bordogna & Ezequiel V. Albano, 2006. "Phase Transitions In A Social Impact Model For Opinion Formation," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 17(03), pages 409-418.
    • Handle: RePEc:wsi:ijmpcx:v:17:y:2006:i:03:n:s0129183106008479
    DOI: 10.1142/S0129183106008479
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    References listed on IDEAS

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    1. Mantegna,Rosario N. & Stanley,H. Eugene, 2007. "Introduction to Econophysics," Cambridge Books, Cambridge University Press, number 9780521039871, October.
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