Quantifying echo chamber effects in information spreading over political communication networks

Abstract Echo chambers in online social networks, in which users prefer to interact only with ideologically-aligned peers, are believed to facilitate misinformation spreading and contribute to radicalize political discourse. In this paper, we gauge the effects of echo chambers in information spreadi...

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Main Authors: Wesley Cota, Silvio C. Ferreira, Romualdo Pastor-Satorras, Michele Starnini
Format: Article
Language:English
Published: SpringerOpen 2019-12-01
Series:EPJ Data Science
Subjects:
Online Access:https://doi.org/10.1140/epjds/s13688-019-0213-9
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author Wesley Cota
Silvio C. Ferreira
Romualdo Pastor-Satorras
Michele Starnini
author_facet Wesley Cota
Silvio C. Ferreira
Romualdo Pastor-Satorras
Michele Starnini
author_sort Wesley Cota
collection DOAJ
description Abstract Echo chambers in online social networks, in which users prefer to interact only with ideologically-aligned peers, are believed to facilitate misinformation spreading and contribute to radicalize political discourse. In this paper, we gauge the effects of echo chambers in information spreading phenomena over political communication networks. Mining 12 million Twitter messages, we reconstruct a network in which users interchange opinions related to the impeachment of the former Brazilian President Dilma Rousseff. We define a continuous political leaning parameter, independent of the network’s structure, that allows to quantify the presence of echo chambers in the strongly connected component of the network. These are reflected in two well-separated communities of similar sizes with opposite views of the impeachment process. By means of simple spreading models, we show that the capability of users in propagating the content they produce, measured by the associated spreading capacity, strongly depends on their attitude. Users expressing pro-impeachment leanings are capable to transmit information, on average, to a larger audience than users expressing anti-impeachment leanings. Furthermore, the users’ spreading capacity is correlated to the diversity, in terms of political position, of the audience reached. Our method can be exploited to identify the presence of echo chambers and their effects across different contexts and shed light upon the mechanisms allowing to break echo chambers.
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spelling doaj.art-4cddcce34df54069a5eae5ae5c97b2912022-12-21T21:32:06ZengSpringerOpenEPJ Data Science2193-11272019-12-018111310.1140/epjds/s13688-019-0213-9Quantifying echo chamber effects in information spreading over political communication networksWesley Cota0Silvio C. Ferreira1Romualdo Pastor-Satorras2Michele Starnini3Departamento de Física, Universidade Federal de ViçosaDepartamento de Física, Universidade Federal de ViçosaDepartament de Física, Universitat Politècnica de CatalunyaISI FoundationAbstract Echo chambers in online social networks, in which users prefer to interact only with ideologically-aligned peers, are believed to facilitate misinformation spreading and contribute to radicalize political discourse. In this paper, we gauge the effects of echo chambers in information spreading phenomena over political communication networks. Mining 12 million Twitter messages, we reconstruct a network in which users interchange opinions related to the impeachment of the former Brazilian President Dilma Rousseff. We define a continuous political leaning parameter, independent of the network’s structure, that allows to quantify the presence of echo chambers in the strongly connected component of the network. These are reflected in two well-separated communities of similar sizes with opposite views of the impeachment process. By means of simple spreading models, we show that the capability of users in propagating the content they produce, measured by the associated spreading capacity, strongly depends on their attitude. Users expressing pro-impeachment leanings are capable to transmit information, on average, to a larger audience than users expressing anti-impeachment leanings. Furthermore, the users’ spreading capacity is correlated to the diversity, in terms of political position, of the audience reached. Our method can be exploited to identify the presence of echo chambers and their effects across different contexts and shed light upon the mechanisms allowing to break echo chambers.https://doi.org/10.1140/epjds/s13688-019-0213-9Echo chambersComputational social scienceInformation spreadingOnline communication networksPolitical polarization
spellingShingle Wesley Cota
Silvio C. Ferreira
Romualdo Pastor-Satorras
Michele Starnini
Quantifying echo chamber effects in information spreading over political communication networks
EPJ Data Science
Echo chambers
Computational social science
Information spreading
Online communication networks
Political polarization
title Quantifying echo chamber effects in information spreading over political communication networks
title_full Quantifying echo chamber effects in information spreading over political communication networks
title_fullStr Quantifying echo chamber effects in information spreading over political communication networks
title_full_unstemmed Quantifying echo chamber effects in information spreading over political communication networks
title_short Quantifying echo chamber effects in information spreading over political communication networks
title_sort quantifying echo chamber effects in information spreading over political communication networks
topic Echo chambers
Computational social science
Information spreading
Online communication networks
Political polarization
url https://doi.org/10.1140/epjds/s13688-019-0213-9
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