I IQ and Global Inequality redovisas genomsnittlig IQ för 113 länder. Här kan man se dessa siffror, i kolumn 3. Sverige har en genomsnittlig IQ på 99. Nå, studien ”The Geography of IQ”, publicerad i Intelligence, undersöker om det finns ett geografiskt mönster länder emellan:

It is found that as predicted, nations that are geographical neighbors have more similar IQs than nations that are far apart. National IQ varies strikingly with position around the globe; the relationship between location and national IQ is even stronger than the relationship between location and national average temperature.

Se även inlägget ”Kognitiv kapitalism”.