>>513169544
PISA scores have a bigger sample, are more recent and are designed by like a psychometric test with huge correlation to ASVAB(Armed Services Vocational Aptitude Battery) which is like the gold standard for the g-factor.
Also,
The data below comes from a 2025 meta-compilation by World Population Review, which draws from Lynn and Becker's global IQ database (2019, with updates) and Flynn's meta-papers (e.g., his 2012 book and subsequent studies up to 2020s analyses showing Flynn effect slowdowns). These are national averages:
| Country | Average IQ (2025 Estimate) | Standard Deviation | Key Notes from Flynn-Related Meta-Analyses |
| ------------- | -------------------------- | ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| |
| United States | 98 | 15 | Stable since 2000s; Flynn effect has plateaued (gains slowed to <1 point/decade per 2023 meta-studies). Higher among Whites/Asians (100-105) vs. other groups. |
| Mexico | 88 | 14 | Modest Flynn-effect gains (~2-3 points/decade) due to improving education/nutrition, per 2019-2024 meta-analyses. Still below global average (90-100). |