Anyone have a link to the complete study?

I would love to know how they link 3,4 And 5 generations, being an amateur genealogist.

Speaking personally, Family pressure to obtain degrees came from gggGF. But "women don't go to college." meant the females went only After their mother paid. (And could). Marrying "up" was the only obvious decision looking back on female members of our tree (from 1853-1946)