Prejudice Reduction: What Works? A Review and Assessment of Research and Practice
A review of 985 studies on prejudice-reduction strategies, such as 'diversity training', 'antibias' or 'cultural competence' interventions, which found that there is no evidence about whether or not they work.
'We conclude that the causal effects of many widespread prejudice-reduction interventions, such as workplace diversity training and media campaigns, remain unknown.'