Sources:
[ul]
[li]IQ and the Wealth of Nations (2006)[/li][li]IQ and Global Inequality (2002)[/li][li]Studies of national cognitive ability (Wikiwand)[/li][/ul]
https://static.iq-research.info/20150809/img/iq_by_country.png
Average national IQs according to IQ and Global Inequality (2002)
Rank Country IQ
1 https://static.iq-research.info/20150809/img/flags/[email protected] Hong Kong 108
1 https://static.iq-research.info/20150809/img/flags/[email protected] Singapore 108
2 https://static.iq-research.info/20150809/img/flags/[email protected] South Korea 106
3 https://static.iq-research.info/20150809/img/flags/[email protected] Japan 105
3 https://static.iq-research.info/20150809/img/flags/[email protected] China 105
4 https://static.iq-research.info/20150809/img/flags/[email protected] Taiwan 104
5 https://static.iq-research.info/20150809/img/flags/[email protected] Italy 102
[SIZE=5](Visit https://iq-research.info/en/page/average-iq-by-country for the full list)
A later version of the study (2012)[/SIZE]
https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/National_IQ_Lynn_Vanhanen_2012.svg/800px-National_IQ_Lynn_Vanhanen_2012.svg.png
[SIZE=5]Source: https://en.wikipedia.org/wiki/File:National_IQ_Lynn_Vanhanen_2012.svg [/SIZE]