According to that article, the 77 cents on the dollar number popularized in political rhetoric is not measuring equal pay for equal work. After controlling for some obvious factors it drops to a single digit percentage. And the authors of the same study point out that even the remainder could be predominantly a result of other uncontrolled factors.
> Noting that the raw wage gap is the result of a number of factors, the report said that the raw gap should not be used to justify corrective action, adding that "Indeed, there may be nothing to correct. The differences in raw wages may be almost entirely the result of the individual choices being made by both male and female workers."
I'm thankful that the wikipedia entry makes a point of separating the two definitions. While I generally nod along with the sentiment provided by top level comment, it's important to understand that there are different definitions; however irrelevant (IMO) one of the definitions seems to be (for the reasons again mentioned by the top level comment.)
One thing I think jecjec has neglected to consider, at least in writing, is that the history of our society and the roles women have played in it do have an impact on what fields women consider. There are always those who go against the grain (read: against what our culture "expects") -- women in technology, men in early childhood education, but they are outliers. Perhaps there is sound reason for some of these differences, but I suspect their could be a lot more even distribution between genders for many fields if we had the opportunity to hit the reset button. Perhaps that's what the gender pay gap is about.
Confounder: if that were the case (society pressures women into making these choices), you would expect that the countries that are most egalitarian and most free would produce the most equal outcomes in terms of chosen profession. Surprisingly (at least to me!), the exact opposite is the case: the more egalitarian the society, the more the genders self-segregate into different professions. The men into more technical ("systematizing") professions, the women into more people-oriented professions.
For example, a recent BBC article asked "Why is Russia so good at encouraging women into tech?"[1] Fortunately, the article contains the answer: economic necessity.
"Most of the girls we talked to from other countries had a slightly playful approach to Stem, whereas in Russia, even the very youngest were extremely focused on the fact that their future employment opportunities were more likely to be rooted in Stem subjects."
So women in Russia follow the money, women in the west follow their passion.
> you would expect that the countries that are most egalitarian and most free would produce the most equal outcomes in terms of chosen profession
I think they will, in time. There are still CEOs around who remember when women were mostly (almost exclusively?) secretaries. I think it's fair to want equality now, but not necessarily fair to expect society to move towards it in such a rapid fashion. Not to mention, even though we're a free society there are still endless reminders that men have these specific jobs, and women have those specific jobs. It's getting better (because people are pushing for it) but films are a usually an example of this: mostly male main characters, most business/finance/tech movies revolve around male characters. Most people to idolize in tech are male. I guess it would be hard to measure, but I'd be surprised to learn this pattern didn't have an impact on a young mind, male or female.
But they don't, regardless of your beliefs. This isn't about expectations or wishes. That data is in, and the most developed and most egalitarian countries (scandinavian) have the greatest self-segregation. And the less developed and the less egalitarian the country, the less the self-segregation, pretty much linearly.
Incidentally, this also explains the drop in female CS enrollment over time. I think we can all agree that the past was less equal than the present. So if your theory were correct, CS enrollment of women would have increased, compared to the past. However, CS enrollment of women has decreased, and people have been twisting themselves into pretzels trying to explain this via the "oppression" narrative. However, no such pretzel-logic is required if you accept the data: men have, on average, different preferences than women, and as societies get more free, those differences express themselves more. Easy peasy.
> mostly male main characters
But why is that? Is it because people don't want to look at women? Or is it because males tend, strongly, towards riskier behavior that makes for more plausibly interesting story lines? I think you are confusing cause and effect.
> Most people to idolize in tech are male.
Most people in tech are male, because of self-segregation, and therefore the ones that people will idolize will also be predominantly male. Factor in the fact that males tend to be much more prone to risk-taking, and the effect should probably be even larger than it is.
You can find a definition on Wikipedia [1].
[1] https://en.wikipedia.org/wiki/Gender_pay_gap