That's true, that is why I mentioned illiteracy, but we would have to see if development arises before or after educational development, because almost all countries in Latin America have been better in the past than today, the golden age of each one gave in the past, and I don't know if the IQ score was higher then.
It is also curious in that map, that a country like North Korea or China have such a high score, which is quite suspicious, the first because it is in such deplorable conditions, and the second because it has a population of over one billion, that is to say, the people with more IQ that are always a minority, should be diluted among so many.
...apart from the Ashkenazi Jews, East Asia has the highest IQ av.
This pretty well documented in many papers I've read..