Dynamics of opinion expression

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dc.contributor.authorGaisbauer, Felix
dc.contributor.authorOlbrich, Eckehard
dc.contributor.authorBanisch, Sven
dc.date.accessioned2025-01-13T12:32:32Z
dc.date.available2025-01-13T12:32:32Z
dc.date.issued2020
dc.description.abstractModeling efforts in opinion dynamics have to a large extent ignored that opinion exchange between individuals can also have an effect on how willing they are to express their opinion publicly. Here, we introduce a model of public opinion expression. Two groups of agents with different opinion on an issue interact with each other, changing the willingness to express their opinion according to whether they perceive themselves as part of the majority or minority opinion. We formulate the model as a multigroup majority game and investigate the Nash equilibria. We also provide a dynamical systems perspective: Using the reinforcement learning algorithm of Q-learning, we reduce the N-agent system in a mean-field approach to two dimensions which represent the two opinion groups. This two-dimensional system is analyzed in a comprehensive bifurcation analysis of its parameters. The model identifies social-structural conditions for public opinion predominance of different groups. Among other findings, we show under which circumstances a minority can dominate public discourse.
dc.identifier.citationGaisbauer, F., Olbrich, E., & Banisch, S. (2020). Dynamics of opinion expression. Physical Review E, 102(4), 42303. https://doi.org/10.1103/PhysRevE.102.042303
dc.identifier.doi10.1103/PhysRevE.102.042303
dc.identifier.issn2470-0045
dc.identifier.urihttps://www.weizenbaum-library.de/handle/id/784
dc.language.isoeng
dc.rightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectdynamical systemsen
dc.subjectpublic discourseen
dc.subjectpublic opinionsen
dc.titleDynamics of opinion expression
dc.typeArticle
dc.type.statuspublishedVersion
dcmi.typeText
dcterms.bibliographicCitation.urlhttps://doi.org/10.1103/PhysRevE.102.042303
local.researchgroupDynamiken digitaler Nachrichtenvermittlung
local.researchtopicDigitale Märkte und Öffentlichkeiten auf Plattformen
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