Related: the PISA is an SAT-like academic test designed for comparisons between countries. It's an estimate of the math and science ability of the entire cohort of graduating seniors in a country. https://en.m.wikipedia.org/wiki/Programme_for_International_...

Lynn's data is frequently attacked as unrepresentative or otherwise lacking. But his studies are very old at this point - his book "IQ and the wealth of nations" is 23 years old at this point, and based on even older data.

Has there been any attempt by the field of psychology to assemble higher quality data, or are they content to merely debunk the data they do have, and have no curiosity as to what the true facts are?