A former HR professor had a theory for this. According to him the key to understanding American management is that homogeneity is crucial. Middle managers (and that's the path to the top) are almost always white males (though white females are increasingly acceptable) in the 115-130 IQ range. Lower and you're dumb, higher and you're a flake (or not a team player).
So I found it interesting that they mentioned the 130 as a cutoff for the school where the students generally led "ordinary" lives.
Leta Hollingworth first introduced the concept; she postulated a 'communication range' of around 30 IQ points, beyond which, the impedance mismatch would make it difficult to build friendships.
So I found it interesting that they mentioned the 130 as a cutoff for the school where the students generally led "ordinary" lives.