I have a nit-pick with these studies, which I haven’t seen addressed: they show that a much larger part of the variance of results results from the birth parents than from the adopted parents.
However, the variance in birth parents’ IQ seems to be much larger than the variance in adopting parents IQ; has this been corrected for?
I have a nit-pick with these studies, which I haven’t seen addressed: they show that a much larger part of the variance of results results from the birth parents than from the adopted parents.
However, the variance in birth parents’ IQ seems to be much larger than the variance in adopting parents IQ; has this been corrected for?