Unraveling image and justice concerns: A social identity account on appraisals and emotional drivers of high-status transgressor group members’ solidarity with low-status groups

High-status group members typically respond defensively when their ingroup members transgress against low-status groups. However, when they identify highly with transgressor groups, they sometimes also engage in solidarity with victimized low-status groups due to ingroup-focused motives. Yet, the response of low-identified transgressor group members, who can prioritize victims’ plight over ingroup interests, remains underexplored. To address this gap, we conducted three preregistered studies (Ntotal = 886) concerning education-based transgressions in the Netherlands and the United Kingdom, employing cross-sectional (Study 1) and experimental designs (Studies 2–3). Supporting previous research, we found that high-identifiers engage in nonradical solidarity driven by ingroup image concerns and image-related emotions. Low-identifiers, however, engage in both nonradical and radical solidarity through perceived injustice and justice-related emotions. Our findings provide insights into the roots of high-status group collective action on behalf of low-status groups against intergroup transgressions. Theoretical and societal implications were discussed.