For research purposes , lynda gratton , a professor at london business school , defines a minority as " less than 30 per cent " , whether it is by gender , race , or having pink hair .

出于研究的目的，伦敦商学院（londonbusinessschool）教授琳达？格莱顿（lyndagratton）把少数群体定义为占比“不到30%”，不管标准是性别、种族还是有粉红色的头发。