4. Hong Kong
Hong Kong, even though it is not a separate country, but the special administrative region is found on our list of smartest countries with the highest average IQ in the world in 2017 as it was ranked separately both in the PISA research as well as in Lynn-Vanhanen’s one. Average measured IQ was 108, which makes it first on the list of average IQ numbers. On the other hand, it has 4.8% of top performers in science, mathematics, and reading.
Pixabay/Public Domain
