When mere multiple group memberships are not enough: individual self-expansion through the involvement in multiple social groups and its relationship with self-efficacy

Tomasz Besta , Julianna Bojko , Aleksandra Pytlos , Elżbieta Tomiałowicz , Natasza Kosakowska-Berezecka , Emma Bäck , Alexandra Vazquez


According to the self-expansion model, people are motivated to increase their sense of personal agency by expanding their sense of self through the acquisition of new identities. We conducted two studies to explore whether the feeling of self-expansion, resulting from multiple group memberships, is related to self-efficacy, and to test whether agentic and communal self-stereotyping mediated this relation. In Study 1 conducted in Poland (N1 = 102), and Study 2 among undergraduate students from Poland, Spain, and Sweden (N2 = 450), a significant indirect effect of self-expansion on self-efficacy through agentic (but not communal) self-stereotyping emerged.
Author Tomasz Besta (FSS/IPsych/DPPFP)
Tomasz Besta,,
- Division of Personality Psychology and Forensic Psychology
, Julianna Bojko (FSS/IPsych)
Julianna Bojko,,
- Institute of Psychology
, Aleksandra Pytlos (FSS/IPsych)
Aleksandra Pytlos,,
- Institute of Psychology
, Elżbieta Tomiałowicz (FSS/IPsych)
Elżbieta Tomiałowicz,,
- Institute of Psychology
, Natasza Kosakowska-Berezecka (FSS/IPsych/DIPGP)
Natasza Kosakowska-Berezecka,,
- Division of Intercultural Psychology and Gender Psychology
, Emma Bäck
Emma Bäck,,
, Alexandra Vazquez
Alexandra Vazquez,,
Journal seriesPolish Psychological Bulletin, ISSN 0079-2993, e-ISSN 1641-7844, (B 15 pkt)
Issue year2018
Publication size in sheets0.50
Keywords in Englishself-expansion, group processes, self-efficacy, agency, social identity
ASJC Classification3200 General Psychology
URL http://journals.pan.pl/Content/103945/PDF/PPB%201-18%2010%20Besta%20et%20al.pdf
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)15
Score sourcejournalList
ScoreMinisterial score = 15.0, 31-01-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.184
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