A Journey Researching Prejudice and Discrimination

This paper surveys 1 of the author's 3 lifetime research themes, namely the social psychology of prejudice and discrimination. We first review large-scale surveys documenting the prevalence of prejudice and discrimination suffered by minorities in Canada including Indigenous, African Canadians, Francophone minorities in English-Canada, and English-speaking communities in Quebec. There is growing evidence of the mental and physical health consequences of being victim of discrimination in Canada and elsewhere in the world. We review laboratory studies using the Minimal Group Paradigm showing that the mere categorisation of people as us versus them and ingroup identification is sufficient to trigger prejudice and discrimination. In line with Social Identity Theory, the degree of ingroup identification and the need to achieve a positive social identity help account for the classic ingroup favoritism effect obtained in Minimal Group Paradigm studies. Thus, both social identity needs (Social Identity Theory) and competition for scarce resources articulated within Realistic Conflict Theory combine to account for prejudice, discrimination, and intergroup antagonisms. Interventions to reduce prejudice and discrimination are discussed including intergroup contact and diversity training. As scientific consultant, the author helped develop the French Radio-Canada television documentary, La Leçon de Discrimination, which won best television educational program in the world and was successfully adapted as a prodiversity pedagogical tool in Canada and worldwide. Public Significance Statement Experiments show that mere categorization of people as us versus them and ingroup identification is sufficient to trigger prejudice and discrimination between groups. There is mounting research documenting the negative mental and physical health consequences of being victim of systemic discrimination. Intergroup contact and diversity training help reduce prejudice and discrimination. Cet article examine l'un des 3 thèmes de recherche privilégiés par l'auteur au cours de sa carrière, notamment la psychologie sociale des préjugés et de la discrimination. Sont d'abord examinées les enquêtes à grande échelle qui documentent l'étendue des préjugés et de la discrimination à l'égard des minorités au Canada, à savoir les Autochtones, les Afro-Canadiens, les minorités francophones dans le Canada anglais et les minorités anglophones au Québec. Il existe des preuves grandissantes des répercussi