Modifying perceived variability: four laboratory and field experiments show the effectiveness of a ready‐to‐be‐used prejudice intervention

We examined whether increasing individuals' perceived variability of an out‐group reduces prejudice and discrimination toward members of this group. In a series of four laboratory and field experiments, we attracted participants' attention to the heterogeneity of members of an out‐group (or not), and then measured their attitudes or behaviors. Perceived variability was manipulated by portraying the out‐group members as having diverse socio‐demographic characteristics and different personality traits and preferences. Prejudice and discrimination were measured in terms of self‐reported prejudice, stereotyping, in‐group bias, social distance, and willingness to do something for the minority group under consideration. In all experiments, perceived variability decreased prejudice and discrimination.