“…These complementary theories, now recognized as the social identity approach, were initially an explanation for intergroup attitudes and behavior (e.g., prejudice, discrimination, cooperation), but new research has shown social identities also have a strong impact on individual health and well-being because of the close connection between the self and the group (for reviews, see Haslam et al, 2009 ; Jetten et al, 2017 ). For instance, just during the COVID-19 pandemic alone, recent data from 67 countries suggest stronger identification with one’s nation predicted more positive well-being ( Bonetto et al, 2021 ) and stronger adherence to recommended health behaviors ( Van Bavel and Boggio, 2020 ). Despite an emerging research agenda that has wielded social identities as a tool for improving individual health and well-being ( Jetten et al, 2017 ), comparatively little research has examined the impact of broader, more inclusive social identifications (e.g., human identity, global identity) on personal health behaviors that have implications for collective health.…”