Social Influence and the Collective Dynamics of Opinion Formation
By Mehdi Moussaïd, Juliane E. Kämmer, Pantelis Pipergias Analytis, Hansjörg Neth. PLoS ONE, 2013
409 citations recorded by the source corpus.
Social influence is the process by which individuals adapt their opinion, revise their beliefs, or change their behavior as a result of social interactions with other people. In our strongly interconnected society, social influence plays a prominent role in many self-organized phenomena such as herding in cultural markets, the spread of ideas and innovations, and the amplification of fears during epidemics. Yet, the mechanisms of opinion formation remain poorly understood, and existing physics-based models lack systematic empirical validation. Here, we report two controlled experiments showing how participants answering factual questions revise their initial judgments after being exposed to the opinion and confidence level of others. Based on the observation of 59 experimental subjects exposed to peer-opinion for 15 different items, we draw an influence map that describes the strength of peer influence during interactions. A simple process model derived from our observations demonstrates how opinions in a group of interacting people can converge or split over repeated interactions. In particular, we identify two major attractors of opinion: (i) the expert effect, induced by the presence of a highly confident individual in the group, and (ii) the majority effect, caused by the presence of a critical mass of laypeople sharing similar opinions. Additional simulations reveal the existence of a tipping point at which one attractor will dominate over the other, driving collective opinion in a given direction. These findings have implications for understanding the mechanisms of public opinion formation and managing conflicting situations in which self-confident and better informed minorities challenge the views of a large uninformed majority.
Subfields: Sociology and Political Science, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/4fb20ba0e882ba9a92952c3e333407327a7f1d8f
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Citations in the corpus
- Cognitive perspectives on opinion dynamics: the role of knowledge in consensus formation, opinion divergence, and group polarization (2017, background): “Also relevant to this is recent empirical research has begun to emerge attempting to test assumptions of opinion dynamics models—looking at the conditions under which humans are willing to change their opinion or an estimate, as a function of both the size of the difference and their confidence in t”
- Models of Social Influence: Towards the Next Frontiers (2017, background): “…Friedkin and Johnsen’s seminal work (Friedkin & Johnsen 2011), recently laboratory experiments have become available that are designed with the goal of testing assumptions of social-influencemodels (Chacoma & Zanette 2015; Vande Kerckhove et al. 2016; Mavrodiev et al. 2013; Moussaïd et al. 2013).”
- Using Large Language Models to Simulate Multiple Humans and Replicate Human Subject Studies (2022, methodology): “For the Wisdom of Crowds TE, we used 5 general-knowledge questions from Moussa¨ıd et al. (2013).”