Identifying with political actions plays a greater role in predicting collective action intention among the advantaged than identifying with political opinions

This research aims to investigate what motivates members of advantaged groups to join collective action efforts aimed at reducing discrimination, as understanding this motivation is crucial for designing effective interventions and campaigns that aim to mobilise these groups in the fight against discrimination. Across three studies conducted in Germany (NStudy 1 = 326; NStudy 2 = 136) and the UK (NStudy 3 = 184), we investigated the psychological mechanisms linking moral conviction to collective action intention among members of advantaged groups. Each study focused on a distinct social issue: xenophobia, sexism, and racism. Specifically, we examined the mediating roles of different types of politicised identification (solidarity-based and opinion-based), perceived collective efficacy, and perceived closeness with discriminated groups. Results consistently showed that solidarity-based identification was a stronger and more reliable predictor of collective action intention than collective efficacy, closeness with discriminated individuals, or opinion-based identification. By focusing on solidarity-based identification, social movements can better harness the potential of these groups to contribute to meaningful social change, thereby enhancing the overall effectiveness of efforts to combat xenophobia, sexism, and racism.