New developments in prejudice research: from its neural basis and impact on well-being to prejudice reduction

•Trends in research on negative intergroup attitudes and treatment are reviewed.•Group psychology and social identity highlighted as explanatory mechanisms.•Neural indicators of prejudice are tied to social identity and social categorization.•Prejudice and discrimination have negative impacts on victim well-being and health.•Community norms may be one avenue to combat prejudice and facilitate social change.