This has interested me for a while. When I was in grad school (as they call it in Canada) we we tought about Cyril Burt (factor analysis). Interesting, but he also fabricated a whole bunch of twin study research. This stuff is hard to subject to proper experimentation (due to ethics) anyway...
Just read this again. Actually, you're right. Behaviour is strongly driven by the moment, versus the extent to which whatever tribal attitudes have found traction. It just happened that when I started teaching there were limitless opportunities for science students to get so-so degrees and...
This. I teach students and these days they are polite, informed and engaging. When I started in this game (89) they were arrogant, lazy, and many of them were stinky. too.