Emergence of metapopulations and echo chambers in mobile agents
Open accessAbstract
Multi-agent models often describe populations segregated either in the physical space, i.e. subdivided in metapopulations, or in the ecology of opinions, i.e. partitioned in echo chambers. Here we show how both kinds of segregation can emerge from the interplay between homophily and social influence in a simple model of mobile agents endowed with a continuous opinion variable. In the model, physical proximity determines a progressive convergence of opinions but differing opinions result in agents moving away from each others. This feedback between mobility and social dynamics determines the onset of a stable dynamical metapopulation scenario where physically separated groups of like-minded individuals interact with each other through the exchange of agents. The further introduction of confirmation bias in social interactions, defined as the tendency of an individual to favor opinions that match his own, leads to the emergence of echo chambers where different opinions coexist also within the same group. We believe that the model may be of interest to researchers investigating the origin of segregation in the offline and online world.
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There is substantial evidence that segregated online communities emerge around politically contentious topics.
“Although recent evidence suggests that general information consumption on social media might not be an echo-chamber for many users (21, 22), there is nevertheless substantial evidence supporting the argument that segregated online communities emerge around politically contentious topics (23, 19, 24, 25, 26, 27, 20).”
From Troll and divide: the language of online polarization (2022) · cites this paper as [26]
Repulsive interactions combined with homophily lead to a decrease of polarization.
“Another class of models describe polarization by introducing repulsive interactions, in which users reject opinions that differ from their own [24-26], but this mechanism combined with homophily leads to a decrease of polarization [27, 28].”
From Modeling echo chambers and polarization dynamics in social networks (2020) · cites this paper as [27]
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- Authors
- Starnini, M., Frasca, M., & Baronchelli, A.
- Affiliations
- Universitat de Barcelona (ES)
- University of Catania (IT)
- City, University of London (GB)
- Corresponding author
- Starnini, Michele
- Frasca, Mattia
- Baronchelli, Andrea
- Venue
- Scientific Reports
- Published
- 2016-08-30
- Volume
- 6
- Issue
- 1
- Pages
- 31834-31834
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC5004139
- OpenAlex
- W2299722746
- Cited by
- 56
- References
- 34
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 6 · 2023: 4 · 2022: 8 · 2021: 6 · 2020: 9 · 2019: 5 · 2018: 4 · 2017: 4 · 2016: 1
- FWCI
- 2.64
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Repositori digital de la UPF (Universitat Pompeu Fabra) (publishedVersion, cc-by)
- City Research Online (City University London) (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- UPCommons institutional repository (Universitat Politècnica de Catalunya) (submittedVersion, cc-by)
- arXiv (Cornell University)
- Funders
- James S. McDonnell Foundation
- Università di Catania (FIR2015)
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Opinion Dynamics and Social Influence
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Complex Systems and Time Series Analysis
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
- Keywords
- metapopulation, echo chambers, opinion dynamics, homophily, social influence, mobile agents, confirmation bias, segregation, multi-agent model
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