Creation, evolution, and dissolution of social groups

Abstract Understanding why people join, stay, or leave social groups is a central question in the social sciences, including computational social systems, while modeling these processes is a challenge in complex networks. Yet, the current empirical studies rarely focus on group dynamics for lack of...

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Autores principales:	James Flamino, Boleslaw K. Szymanski, Ashwin Bahulkar, Kevin Chan, Omar Lizardo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/51a837e50fd040a58af1427934326f96
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spelling	oai:doaj.org-article:51a837e50fd040a58af1427934326f962021-12-02T17:51:26ZCreation, evolution, and dissolution of social groups10.1038/s41598-021-96805-72045-2322https://doaj.org/article/51a837e50fd040a58af1427934326f962021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96805-7https://doaj.org/toc/2045-2322Abstract Understanding why people join, stay, or leave social groups is a central question in the social sciences, including computational social systems, while modeling these processes is a challenge in complex networks. Yet, the current empirical studies rarely focus on group dynamics for lack of data relating opinions to group membership. In the NetSense data, we find hundreds of face-to-face groups whose members make thousands of changes of memberships and opinions. We also observe two trends: opinion homogeneity grows over time, and individuals holding unpopular opinions frequently change groups. These observations and data provide us with the basis on which we model the underlying dynamics of human behavior. We formally define the utility that members gain from ingroup interactions as a function of the levels of homophily of opinions of group members with opinions of a given individual in this group. We demonstrate that so-defined utility applied to our empirical data increases after each observed change. We then introduce an analytical model and show that it accurately recreates the trends observed in the NetSense data.James FlaminoBoleslaw K. SzymanskiAshwin BahulkarKevin ChanOmar LizardoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q James Flamino Boleslaw K. Szymanski Ashwin Bahulkar Kevin Chan Omar Lizardo Creation, evolution, and dissolution of social groups
description	Abstract Understanding why people join, stay, or leave social groups is a central question in the social sciences, including computational social systems, while modeling these processes is a challenge in complex networks. Yet, the current empirical studies rarely focus on group dynamics for lack of data relating opinions to group membership. In the NetSense data, we find hundreds of face-to-face groups whose members make thousands of changes of memberships and opinions. We also observe two trends: opinion homogeneity grows over time, and individuals holding unpopular opinions frequently change groups. These observations and data provide us with the basis on which we model the underlying dynamics of human behavior. We formally define the utility that members gain from ingroup interactions as a function of the levels of homophily of opinions of group members with opinions of a given individual in this group. We demonstrate that so-defined utility applied to our empirical data increases after each observed change. We then introduce an analytical model and show that it accurately recreates the trends observed in the NetSense data.
format	article
author	James Flamino Boleslaw K. Szymanski Ashwin Bahulkar Kevin Chan Omar Lizardo
author_facet	James Flamino Boleslaw K. Szymanski Ashwin Bahulkar Kevin Chan Omar Lizardo
author_sort	James Flamino
title	Creation, evolution, and dissolution of social groups
title_short	Creation, evolution, and dissolution of social groups
title_full	Creation, evolution, and dissolution of social groups
title_fullStr	Creation, evolution, and dissolution of social groups
title_full_unstemmed	Creation, evolution, and dissolution of social groups
title_sort	creation, evolution, and dissolution of social groups
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/51a837e50fd040a58af1427934326f96
work_keys_str_mv	AT jamesflamino creationevolutionanddissolutionofsocialgroups AT boleslawkszymanski creationevolutionanddissolutionofsocialgroups AT ashwinbahulkar creationevolutionanddissolutionofsocialgroups AT kevinchan creationevolutionanddissolutionofsocialgroups AT omarlizardo creationevolutionanddissolutionofsocialgroups
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Creation, evolution, and dissolution of social groups

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