That advice to women to ‘lean in’, be more confident it doesn’t help
theconversation.com
theconversation.com
That's been my experience as well with female bosses. The best ones I've had seemed genuine, and led in their own way. The ones that tried to act like males usually fed into the "confident women are bitches" stereotype because everyone could tell that they were insecure about being in charge, and tried to overcompensate by trying to emulate super aggressive alpha-male types. Males make the same mistake, but it feels like they get an opportunity to correct their behavior, whereas females don't get another chance once they are painted as "that bitch boss".
Since people generally seem to underestimate the work and effort that any job other than their own takes, being quiet and capable means forever remaining quiet and capable in the same position. This applies to men and surely also applies to women (although there likely may be additional factors for women).
My point is, regardless of what gender you are, being calculatedly outspoken and visible is surely a necessary element in one's career progression.
Data visualization is a terrible way to make an argument about human behavior.
edit: or anywhere else
It's also a reductionist view of what the advice in "lean in" is actually about. It's been a while since I read it, but my recollection is that it is about actually doing things like staying in the workforce even if you have kids, putting your name in for promotions, etc. I would be extremely surprised if choices like those are not correlated with likelihood of promotion.
I personally think on-campus recruiting is a great way to get young women into tech. I loved mentoring the young women we hired, managing them, promoting them, etc. (before I left to found my own company).