How Do Opinions Power the Group Up? A Critical Review of Social Identity Concepts in Opinion-Based Groups

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Authors
Monik, Anna
Parzuchowski, MichaƂ
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Date
2024-08-29
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Identity
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1-23
ISSN
1528-3488
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2025-08-29
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Abstract EN
We conducted a meta-analysis and a narrative review of the concept of the social identity in opinion-based groups and its impact on intergroup relations. The following research questions were explored: what is the general predictive value of the construct in the realm of group dynamics? How does the process of identity shaping unfold? What determines the intensity of identification with like-minded people? What are the possible consequences of such identification? The quantitative results identified 45 studies with 124 independent effect sizes, representing 30063 observations. Analyses revealed a medium positive relationship between social identity and intergroup phenomena (r = .46) with a high degree of heterogeneity and identified three significant moderators responsible for the total observed variance in effect sizes. The narrative review showed that among main paths of forming intergroup connections, opinion-based groups were investigated mainly through cooperation (collective action) rather than positive intergroup contact (prejudice reduction). The dominant context shifted from political to social issues, focusing on transnational grassroots activism. Research predominantly explored social belonging as a predictor of in-group intentions, neglecting the factors contributing to its development. We highlight vagueness in the operationalization of this phenomenon. Our analysis identifies significant gaps for future research.
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Keywords PL
Keywords EN
social identity
group identification
opinion-based groups
intergroup relations
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cc-by-nc-nd
Except as otherwise noted, this item is licensed under the Attribution-NonCommercial-NoDerivatives licence | Permitted use of copyrighted works
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