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Homophily in Personality Enhances Group Success Among Real-Life Friends

Laakasuo, M; Rotkirch, A; Van Duijn, M; Berg, V; Jokela, M; David-Barrett, T; Miettinen, A; ... Dunbar, R; + view all (2020) Homophily in Personality Enhances Group Success Among Real-Life Friends. Frontiers in Psychology , 11 , Article 710. 10.3389/fpsyg.2020.00710. Green open access

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Abstract

Personality affects dyadic relations and teamwork, yet its role among groups of friends has been little explored. We examine for the first time whether similarity in personality enhances the effectiveness of real-life friendship groups. Using data from a longitudinal study of a European fraternity (10 male and 15 female groups), we investigate how individual Big Five personality traits were associated with group formation and whether personality homophily related to how successful the groups were over 1 year (N = 147–196). Group success was measured as group performance/identification (adoption of group markers) and as group bonding (using the inclusion-of-other-in-self scale). Results show that individuals’ similarity in neuroticism and conscientiousness predicted group formation. Furthermore, personality similarity was associated with group success, even after controlling for individual’s own personality. Especially higher group-level similarity in conscientiousness was associated with group performance, and with bonding in male groups.

Type: Article
Title: Homophily in Personality Enhances Group Success Among Real-Life Friends
Location: Switzerland
Open access status: An open access version is available from UCL Discovery
DOI: 10.3389/fpsyg.2020.00710
Publisher version: https://doi.org/10.3389/fpsyg.2020.00710
Language: English
Additional information: Copyright © 2020 Laakasuo, Rotkirch, van Duijn, Berg, Jokela, David-Barrett, Miettinen, Pearce and Dunbar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (http://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Keywords: friendship, personality, Big Five, groups, group performance, inclusion-of-other-in-self
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry
URI: https://discovery.ucl.ac.uk/id/eprint/10098770
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