Women and minority managers who support diversity in the workplace had lower ratings during performance evaluations, while white male executives experienced no effect in performance ratings, reports a new study that queried 350 executives on diversity-valuing behaviors in the workplace. To verify initial survey results, 307 people were asked to evaluate a proposed hiring decision, while being given the reasons for hiring and a photograph of the hiring manager. All managers were rated less positively if they hired someone who looked similar to them, unless they were a white male manager.
See "Women and minorities penalized for promoting workplace diversity – study", Ellen Brait, The Guardian, March 28, 2016