Charles Murray in Coming Apart talks about assortive mating, and points out its relative success among the "elite." The upper 20% of society enjoys 1) a relatively-higher marriage rate; 2) a much lower divorce rate; 3) a much lower illegitimacy rate; 4) a lower abortion rate; 5) a very high education rate.
The idea here is that people of this class tend to marry each other, reinforcing the cultural and genetic inheritances they received from their forbears in their own children. The stereotype of this is Susan Patton's "Princeton Mom," who makes the argument that young Ivy Leaguers should look at their college days as the prime time and place to find a mate.
There are certain qualities that seem to recur with frequency in this class, that I believe help explain the overall success enjoyed.
I read that book too. There is a bad consequence of this/women working. If women are taking more and more high paying jobs, that leaves more and more men with lower paying jobs. And their spouses are either forced to live on one reduced income or work too. And thus lower the pay scale for men even more. So what you end up with is a situation where very few Americans feel like they can survive on just the husband’s salary.
That is progress for some: To force everyone into the labor market. Another consequence is to concentrate resources more unequally. Instead of two Doctors marrying two women and having four people live well, you have two Doctors marrying each other and having two people live very well. It’s beneficial to some. Detrimental to others.