alt Hacker News> there just aren't that many people interested in a global country-by-country inventory of "average IQ".
Thats also a fair theory to explain the lack of real data. Given the frequency with which I've had similar conversations it feels off to me, but that may just be my bias.
It certainly seems to be a very interesting problem to researchers. Thirty years later it is still cited frequently enough that Elsevier is having to hunt and destroy papers that cite it.
https://www.theguardian.com/science/2024/dec/10/elsevier-rev...
Again: there is active science being done at some of the largest research universities in the world on the questions you're talking about. What there isn't is a global country-by-country survey of representative samples of people to generate "average IQ", not because such a thing would be forbidden knowledge (we're awash in data that would be equivalently "forbidden"), but because the cost of such a project likely swamps any utility it might have. It's an idee fixee of message boards.
The data discussed in the Guardian article you cited there is fraudulent. They're hunting it down because it's bad data. It's exactly the same impulse as the Data Colada and Retraction Watch people, which is celebrated on HN. But now the wrong ox is getting gored, and people are uncomfortable with it.