Europhys. Lett.
Volume 74, Number 2, April 2006
Page(s) 222 - 228
Section General
Published online 29 March 2006
Europhys. Lett., 74 (2), pp. 222-228 (2006)
DOI: 10.1209/epl/i2005-10536-9

How to make an efficient propaganda

T. Carletti1, D. Fanelli2, 3, S. Grolli4 and A. Guarino4

1  Département des Mathématiques FUNDP rempart de la Vierge 8, B 5000 Namur, Belgium
2  Dipartimento di Energetica, Università di Firenze and INFN via S. Marta, 3, 50139 Firenze, Italy
3  Department of Cell and Molecular Biology, Karolinska Institute SE-17771 Stockholm, Sweden
4  Université de la Polynésie Française, BP 6570 Faa'a, 98702 Tahiti, French Polynesia

received 13 December 2005; accepted in final form 27 February 2006
published online 29 March 2006

The effects of propaganda are analyzed in an opinion dynamics model in which, under certain conditions, individuals adjust their opinion as a result of random binary encounters. The aim of this paper is to study under what conditions propaganda changes the opinion dynamics of a social system. Four different scenarios are found, characterized by different sensitivities to the propaganda. For each scenario the maximum efficiency of propaganda is attained following a given strategy that is here outlined.

05.45.-a - Nonlinear dynamics and chaos.
89.65.-s - Social and economic systems.

© EDP Sciences 2006