Why Does Average IQ Differ Between Countries?
Research by Richard Lynn, Tatu Vanhanen, and their critics has shown that average IQ scores differ between countries. It's important to understand why — and these are environmental, not genetic factors.
Key Factors Influencing National Average IQ
1. Educational System
The quality and accessibility of education has an enormous impact. James Flynn's studies (the Flynn Effect) showed that average IQ in developed countries grows by 3 points per decade due to better education.2. Nutrition and Health
3. Access to Healthcare
Parasitic infections (especially intestinal worms) are significantly more prevalent in tropical countries and demonstrably reduce cognitive performance in children.4. The Flynn Effect — IQ Is Rising
A remarkable fact: average IQ is rising globally. Over the last 100 years, average IQ in developed countries has risen by 30 points. This proves that IQ reflects environment, not genetics.Highest Average IQ in Europe
According to available data, these European countries have the highest average IQ scores:
Important Disclaimer
IQ tests measure a specific type of cognitive performance in a specific cultural and linguistic context. National IQ averages do not reflect the innate intelligence of populations, but rather a combination of historical, economic, and educational factors.
Find Out Where You Stand
Regardless of national averages — your personal IQ depends on your experiences, education, and training. Test yourself on IQboost and find your result.