I think bias and gender expectations among peers could have a very large effect. It's striking to me watching my nieces play and how strictly they enforce whet

I think bias and gender expectations among peers could have a very large effect. It's striking to me watching my nieces play and how strictly they enforce whether something is for boys or girls. Also it looks to me like groups of women in an office enforce very different norms on each other than men do in terms of fashion, socialization, communication style. How large is this effect compared to biases down the power structure? I don't know, it's an empirical question but everyone seems to pre-assume the answer.