@ARTICLE{Besta_Tomasz_When_2018, author={Besta, Tomasz and Tomiałowicz, Elżbieta and Bojko, Julianna and Pytlos, Aleksandra and Kosakowska-Berezecka, Natasza and Bäck, Emma and Vazquez, Alexandra}, volume={vol. 49}, number={No 1: Motivation and Social Perception: Theory and Practice}, journal={Polish Psychological Bulletin}, howpublished={online}, year={2018}, publisher={Committee for Psychological Science PAS}, type={Artykuły / Articles}, title={When mere multiple group memberships are not enough: Individual self-expansion through involvement in social groups and self-efficacy belief}, URL={http://journals.pan.pl/Content/103945/PDF/PPB%201-18%2010%20Besta%20et%20al.pdf}, doi={10.24425/119474}, keywords={self-expansion, group processes, self-efficacy, agency, social identity}, }