Showing mixed emotions can rehumanize aliens … And real groups

To deny others’ humanity is one of the most heinous forms of intergroup prejudice. Given evidence that perceiving various forms of complexity in outgroup members reduces intergroup prejudice, we investigated across three experiments whether the novel dimension of emotional complexity, or outgroup members’ joint experience of mixed-valence emotions, would also reduce their dehumanization. Experiment 1 found that perceiving fictitious aliens’ experience of the same primary emotions (e.g., sadness) presented in mixed vs. non-mixed valence pairs led to reduced prejudice via attenuated dehumanization, i.e. attribution of uniquely human emotions. Experiment 2 confirmed these results, using an unfamiliar real-world group as an outgroup target. Experiment 3 used a familiar outgroup and found generally similar effects, reducing social distance through reduced dehumanization. These processes suggest that an alternate route to reduced dehumanizing of outgroups might involve presenting mixed valence emotions.