Mass media destabilizes the cultural homogeneous regime in Axelrod's model

Details Mass media destabilizes the cultural homogeneous regime in Axelrod's model Mass media destabilizes the cultural homogeneous regime in Axelrod's model

2009-10-05

arxiv.org/abs/0910.0866v1

J. Phys. A: Math. Theor. vol. 43, 055003 (2010)

Physics

Physics and Society

Scientific paper

10.1088/1751-8113/43/5/055003

An important feature of Axelrod's model for culture dissemination or social influence is the emergence of many multicultural absorbing states, despite the fact that the local rules that specify the agents interactions are explicitly designed to decrease the cultural differences between agents. Here we re-examine the problem of introducing an external, global interaction -- the mass media -- in the rules of Axelrod's model: in addition to their nearest-neighbors, each agent has a certain probability $p$ to interact with a virtual neighbor whose cultural features are fixed from the outset. Most surprisingly, this apparently homogenizing effect actually increases the cultural diversity of the population. We show that, contrary to previous claims in the literature, even a vanishingly small value of $p$ is sufficient to destabilize the homogeneous regime for very large lattice sizes.

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