Could you provide a citation? I am asking because this conflicts (not overstating) with every single study I read on this general topic. To name a few:

* The only relevant factor for predicting chess skill at any level seems to be hours spent on deliberate practice, see for example: https://doi.org/10.1002/acp.1106

* There is the decently famous Terman research (https://en.wikipedia.org/wiki/Lewis_Terman), who was convinced that he could predict future Nobel price winners, executives and wealthy people by IQ-testing them as a child. His approach basically did not work at all - to just name on aspect; he actually excluded two future Nobel-price winners from his group of future winners because their IQ was too low

* Students who are picked to fulfill minority quotas are just as likely to have successful law careers after graduating than their picked-by-intelligence colleagues (https://doi.org/10.1111/j.1747-4469.2000.tb00967.x)

I could name many more, but it is not my intention to win an argument by wall-of-text here, I am genuinely interested in sources pointing into a different direction. Thank you for your time!