Strategies for the promotion of humanity attribution to outgroups

Outgroup dehumanisation, the denial of full humanity to outgroups relative to ingroups, is pervasive in many contemporary societies. The aim of the present work is to review effective strategies aimed at fostering outgroup humanity attribution. After presenting the main models of humanity attribution, we differentiate two types of strategies. Outgroup-specific strategies are focused on a target outgroup, therefore their effectiveness is more dependent upon the specific intergroup relationship. These include intergroup contact, meta-humanisation, and social categorisation. Outgroup-independent strategies are not inherently linked to a target outgroup, implying that their effectiveness is less dependent on the specific intergroup dynamics under consideration. These involve human-animal similarity and secure relationship attachment. We provide evidence for the effectiveness of these strategies and their underlying processes, showcasing our research programme within the larger literature. In so doing, we take into account the distinction between blatant and subtle dehumanisation, and conclude with suggestions for future research.