A middle option for choices in the Continuous Opinions and Discrete Actions model

Details A middle option for choices in the Continuous Opinions and Discrete Actions model A middle option for choices in the Continuous Opinions and Discrete Actions model

2009-04-12

arxiv.org/abs/0904.1882v1

Advances and Applications in Statistical Sciences, 2, 2, 333-346 (2010)

Physics

Physics and Society

10 pages, 5 figures

Scientific paper

Modeling the conditions for the emergence of extremism is a very important problem, with clear applications for describing the interaction among individuals. Traditional models either are not suited for the task, as in the case of discrete models, or, like Bounded Confidence models, are built with rules that make opinions tend to a common ground between agents or not change at all. Continuous Opinions and Discrete Actions (CODA) model allowed us to observe the emergence of extremist agents, even when every agent was initially a moderate, due to local influence effects. In this paper, the problem of emergence of extremism will be addressed by introducing a middle discrete option in the CODA model, making it similar to a Potts model. Different scenarios for the third option will be discussed: when it is equivalent to withholding judgment, when it is a real third option and when it is a real, middle option. The effects on the opinions will be studied and its effects on extremism discussed. Withholding judgment seems to have an unexpected effect, causing the diminishing of moderate opinions in the long run. For a central third opinion, we find that, under specific conditions, this new choice can act as a buffer between the extreme choices.

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