Predicting employee attitudes to workplace diversity from personality, values, and cognitive ability

•Honesty-humility, Extraversion, and Openness predicted positive attitudes to workplace diversity.•Cognitive ability, especially verbal, predicted positive attitudes to workplace diversity.•Valuing power, security, and tradition predicted negative attitudes to workplace diversity.•Valuing universalism predicted positive attitudes to workplace diversity.•Narrow traits of personality, values, and ability improved prediction of attitudes to diversity.