eprintid: 10098770 rev_number: 16 eprint_status: archive userid: 608 dir: disk0/10/09/87/70 datestamp: 2020-05-29 15:35:03 lastmod: 2021-10-04 00:32:17 status_changed: 2020-05-29 15:35:03 type: article metadata_visibility: show creators_name: Laakasuo, M creators_name: Rotkirch, A creators_name: Van Duijn, M creators_name: Berg, V creators_name: Jokela, M creators_name: David-Barrett, T creators_name: Miettinen, A creators_name: Pearce, E creators_name: Dunbar, R title: Homophily in Personality Enhances Group Success Among Real-Life Friends ispublished: pub divisions: UCL divisions: B02 divisions: C07 divisions: D79 keywords: friendship, personality, Big Five, groups, group performance, inclusion-of-other-in-self note: 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. 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. date: 2020-05-04 date_type: published official_url: https://doi.org/10.3389/fpsyg.2020.00710 oa_status: green full_text_type: pub pmcid: PMC7212830 language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1783842 doi: 10.3389/fpsyg.2020.00710 lyricists_name: Pearce, Eiluned lyricists_id: EHPEA15 actors_name: Flynn, Bernadette actors_id: BFFLY94 actors_role: owner full_text_status: public publication: Frontiers in Psychology volume: 11 article_number: 710 event_location: Switzerland citation: Laakasuo, M; Rotkirch, A; Van Duijn, M; Berg, V; Jokela, M; David-Barrett, T; Miettinen, A; ... Dunbar, R; + view all <#> Laakasuo, M; Rotkirch, A; Van Duijn, M; Berg, V; Jokela, M; David-Barrett, T; Miettinen, A; Pearce, E; Dunbar, R; - view fewer <#> (2020) Homophily in Personality Enhances Group Success Among Real-Life Friends. Frontiers in Psychology , 11 , Article 710. 10.3389/fpsyg.2020.00710 <https://doi.org/10.3389/fpsyg.2020.00710>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10098770/1/fpsyg-11-00710.pdf