— National IQ research
Average IQ in Mexico
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Estimated avg IQ
90
Percentile
25th
Region
North America
vs world avg (82)
8 points above
Published cross-national IQ research places Mexico at an estimated national average IQ of around 90. This is a population mean estimate with wide confidence intervals — not a fixed number.
Mexico's national average covers enormous regional variation. Urban, educated Mexicans perform substantially above the national figure.
— Try one before you read on
Which number completes the sequence: 2, 6, 12, 20, 30, ?
Differences grow by 2 each time: +4, +6, +8, +10, +12 → 30+12=42.
That was 1 question. Take the full 20-min test →
Important caveats about national IQ averages
→Pause. Find out YOUR IQ before you keep reading.National IQ averages are widely cited but require careful interpretation:
- Within-country variation is enormous — typically 15-20 IQ points of standard deviation within any country, far larger than differences between countries
- Education and nutrition access are the strongest predictors of national average IQ — countries with better early childhood nutrition and schooling score higher
- Urban vs. rural gaps can be 10-15 points within the same country
- Measurement bias is real — tests developed in Western contexts may not perfectly transfer to other cultures
- Scores are rising in most countries (the Flynn effect) — estimates from 10+ years ago are already outdated
How do you compare?
Take a 20-minute IQ test and see your personal score — regardless of where you're from.
Countries with similar average IQ
→Curious how YOU score? 20-min calibrated test.- Average IQ in Portugal — estimated 95
- Average IQ in Greece — estimated 94
- Average IQ in Brazil — estimated 87
- Average IQ in Argentina — estimated 93
- Average IQ in Chile — estimated 90
What drives differences in national IQ?
→The numbers above? Find out where YOU land.Cross-national cognitive differences are strongly predicted by:
- Per-capita spending on education, particularly in early childhood
- Childhood nutrition — iodine, iron, and protein deficiency in early years have measurable cognitive effects
- Infectious disease burden — diseases that divert metabolic resources away from brain development
- Genetic diversity — surprisingly, more genetically diverse populations tend to score higher, not lower
- GDP per capita — as a proxy for all of the above
These factors suggest that national IQ averages are highly malleable — nutrition and education interventions reliably raise them over 1-2 generations.