Guerra, Rita; Golec de Zavala, Agnieszka; Bierwiaczonek, Kinga; Ciesielski, Pawel; Abakoumkin, Georgios; Wildschut, Tim and Sedikides, Constantine. 2025. A case of mistaken identity: Miscategorisation of the ingroup as a historically rivalrous outgroup triggers collective narcissism. Group Processes & Intergroup Relations, ISSN 1368-4302 [Article] (In Press)

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Abstract or Description

Collective narcissism’s links with intergroup relations, such as intergroup hostility, are well established, but less is known about the intergroup conditions that trigger it. We experimentally examined whether categorisation threat—operationalised as mistaking the ingroup for a historically rivalrous outgroup, thus undermining the ingroup’s uniqueness—heightens collective narcissism, and whether this, in turn, escalates hostility toward the pertinent outgroup through collective narcissism. Additionally, we compared collective narcissism to another form of ingroup positivity: ingroup satisfaction. We conducted four experiments (N = 1,537) manipulating categorisation threat in two national contexts (Poland, Portugal), and carried out an internal meta-analysis. As hypothesised, the findings revealed an increase in collective narcissism, as well as a positive indirect effect of categorisation threat on outgroup hostility mediated by collective narcissism, but not by ingroup satisfaction. This research establishes categorisation threat as a robust trigger of collective narcissism.

Item Type:	Article
Identification Number (DOI):	https://doi.org/10.1177/13684302251345405
Additional Information:	Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by a Foundation of Science and Technology (Fundação para a Ciência e Tecnologia) grant awarded to Rita Guerra, Agnieszka Golec de Zavala, and Constantine Sedikides (PTDC/MHC-PSO/0144/2014), and by a Polish National Science Centre (Narodowe Centrum Nauki) grant awarded to Agnieszka Golec de Zavala (2017/26/A/HS6/00647).
Data Access Statement:	We deposited datasets, codes for the analyses, and supplemental material at the Open Science Framework (OSF; https://osf.io/a75dj/).
Keywords:	categorisation threat, collective narcissism, ingroup distinctiveness, ingroup satisfaction, outgroup hostility
Departments, Centres and Research Units:	Psychology
Dates:	Date Event 11 April 2024 Submitted 5 May 2025 Accepted 18 July 2025 Published Online
Item ID:	39354
Date Deposited:	11 Aug 2025 10:05
Last Modified:	11 Aug 2025 10:05
Peer Reviewed:	Yes, this version has been peer-reviewed.
URI:	https://research.gold.ac.uk/id/eprint/39354

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