These plots show a persistent difference at 30 to 40 years past graduation. Society was very different when the first teams in their study, from 1970, graduate

These plots show a persistent difference at 30 to 40 years past graduation. Society was very different when the first teams in their study, from 1970, graduated. Even though the classification of athlete vs non athlete is of course silly and it would be hard to correct for other biases well, I would still like to see a followup in 30 years starting with graduates after year 2000.