STEVE SAILER: The Dunedin Study: Nature v. Nurture Across 40 Years.

If Herrnstein and Murray are wrong, we now have 20 more years of data from the NLSY79 tracking, which now includes thousands of children of females in the original study, including both mother and child IQ-like scores. You can access NLSY79 data here. The most recent published update is from 2012.

Plus we have the NLSY97 tracking study from 18 years later that has now been running for 17 years.

And we have lots of other long-term tracking samples, such as ADD Health.

Overseas, there is the Dunedin sample. The medical and dental school in the New Zealand city of Dunedin enrolled virtually every child born in Dunedin over a 12-month period in 1972-73 into this lifelong study. The subjects are now in their early 40s and their children are being enrolled as they reach age 15. A sizable documentary is being prepared on the results called “The Science of Us.”