“…It reflects the extent to which a person is part of multiple social groups (e.g., community groups, sports groups) and not necessarily organizational groups like the other fields. The main topics encompassed here are the effects of being part of multiple social groups on individuals' (mental) health and well-being (e.g., Bule and Frings, 2015;Kinsella et al, 2020;Gallagher et al, 2021;Rees et al, 2022) or cognitive processing and performance (e.g., Woods et al, 2018;Beadleston et al, 2019). Furthermore, it also covers multiple group membership in relation to other social psychology themes, such as self-esteem (Jetten et al, 2015), aging (Ysseldyk et al, 2013), divorce (Lampraki et al, 2019), resilience in violence and abuse (Haslam et al, 2022), and protest (Besta et al, 2019).…”