To get a good grounding of IQ globally, we’re going to look at PISA and Lynn’s country IQ data, and look at various regions. And what we see is that PISA scores basically correspond with Lynn’s data – and the more countries you have, and the more studies you have in each country, the better the correspondence.
The reason I’m using the PISA scores – and I would use more international tests if I could – is as a “reality check”. Now PISA is not IQ, and so if the PISA scores didn’t back the IQ test scores, that wouldn’t NECESSARILY mean the IQ data was wrong, but it would SUGGEST that the IQ data was wrong.
Likewise, the IQ and PISA scores corresponding doesn’t NECESSARILY vindicate the IQ data, but it does SUGGEST that the IQ data is valid.
First, the global PISA scores:
Next we can look at the PISA scores and Lynn’s IQ scores of various regions:
Hopefully this gives the reader an idea of IQs by country and region, and has an idea of how consistent they are. If you are reading these posts in order, this concludes the basic data series.
*The numbers for Greece are correct, 92.2 from both the IQ data and PISA scores.
PISA data and SD: