46575 20230126102831.0 doi 10.1140/epjds/s13688-015-0042-4 sideral 90799 ART-2015-90799 eng Alvarez, R. (orcid)0000-0002-5060-7658 Sentiment cascades in the 15M movement 2015 Access copy available to the general public Unrestricted Recent grassroots movements have suggested that online social networks might play a key role in their organization, as adherents have a fast, many-to-many, communication channel to help coordinate their mobilization. The structure and dynamics of the networks constructed from the digital traces of protesters have been analyzed to some extent recently. However, less effort has been devoted to the analysis of the semantic content of messages exchanged during the protest. Using the data obtained from a microblogging service during the brewing and active phases of the 15M movement in Spain, we perform the first large scale test of theories on collective emotions and social interaction in collective actions. Our findings show that activity and information cascades in the movement are larger in the presence of negative collective emotions and when users express themselves in terms related to social content. At the level of individual participants, our results show that their social integration in the movement, as measured through social network metrics, increases with their level of engagement and of expression of negativity. Our findings show that non-rational factors play a role in the formation and activity of social movements through online media, having important consequences for viral spreading. info:eu-repo/grantAgreement/EC/FP7/317532/EU/Foundational Research on MULTIlevel comPLEX networks and systems/MULTIPLEX info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 1.567 2015 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS 36 / 101 = 0.356 2015 Q2 T2 SOCIAL SCIENCES, MATHEMATICAL METHODS 17 / 49 = 0.347 2015 Q2 T2 0.98 2015 Computer Science Applications 2015 Q1 Modeling and Simulation 2015 Q1 Computational Mathematics 2015 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Garcia, D. Moreno, Y. Universidad de Zaragoza (orcid)0000-0002-0895-1893 Schweitzer, F. 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 4 (2015), 1-13 EPJ data sci. EPJ Data Science 2193-1127 1673325 http://zaguan.unizar.es/record/46575/files/texto_completo.pdf Versión publicada 92480 http://zaguan.unizar.es/record/46575/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:46575 articulos driver 2023-01-26-09:50:34 ARTICLE