Re: Not Just Women
Beat me to it.
Its not just bias on gender, class, skin colour, "looks", all sorts of things come into it.
Some people will be knowingly sexist, racist, etc., others will have unconscious bias, but you will struggle to find someone without bias (they may well be unaware of it).
The classic example was orchestra auditions, as soon as auditions were done with performer hidden behind a screen (so judgement purely on musicality) - number of offers to women & minorities increased significantly.
.Even if bias reducing recruitment method used, there is the next issue of the general team culture, in a room full of rich ex public school boys a black female from a council estate won't feel 100% at ease (even if the males behaviour is impeccable)
Said as someone from a working class background with (non Southern UK) regional accent - often you see the look on someones face as soon as they hear your accent and know that "instant judgement" has kicked in.