This information comes from the publication called IQ and the Wealth of Nations” by Richard Lynn and Tatu Vanhanen. It is considered controversial, but there are few studies like it.
| Country | IQ |
| Hong Kong | 107 |
| South Korea | 106 |
| Japan | 105 |
| Taiwan | 104 |
| Singapore | 103 |
| Germany | 102 |
| Austria | 102 |
| Italy | 102 |
| Netherlands | 102 |
| Sweden | 101 |
| Switzerland | 101 |
| China | 100 |
| New Zealand | 100 |
| Belgium | 100 |
| United Kingdom | 100 |
| Hungary | 99 |
| Estonia | 99 |
| Poland | 99 |
| Spain | 99 |
| Mongolia | 98 |
| Iceland | 98 |
| United States | 98 |
| Australia | 98 |
| Denmark | 98 |
| France | 98 |
| Norway | 98 |
| Czech Republic | 97 |
| Belarus | 97 |
| Finland | 97 |
| Latvia | 97 |
| Lithuania | 97 |
| Canada | 97 |
| Ukraine | 97 |
| Russia | 96 |
| Uruguay | 96 |
| Slovakia | 96 |
| Argentina | 96 |
| Portugal | 95 |
| Slovenia | 95 |
| Moldova | 95 |
| Malta | 95 |
| Romania | 94 |
| Israel | 94 |
| Vietnam | 94 |
| Georgia | 94 |
| Serbia | 93 |
| Macedonia | 93 |
| Bulgaria | 93 |
| Armenia | 93 |
| Kazakhstan | 93 |
| Chile | 93 |
| Cyprus | 92 |
| Malaysia | 92 |
| Greece | 92 |
| Ireland | 92 |
| Thailand | 91 |
| Brunei | 91 |
| Croatia | 90 |
| Peru | 90 |
| Bosnia and Herzegovina | 90 |
| Albania | 90 |
| Turkey | 90 |
| Suriname | 89 |
| Colombia | 89 |
| Laos | 89 |
| Cambodia | 89 |
| Indonesia | 89 |
| Costa Rica | 89 |
| Venezuela | 88 |
| Jordan | 87 |
| Brazil | 87 |
| Tonga | 87 |
| Tajikistan | 87 |
| Kyrgyzstan | 87 |
| Mexico | 87 |
| Turkmenistan | 87 |
| Uzbekistan | 87 |
| Azerbaijan | 87 |
| Iraq | 87 |
| Myanmar (Burma) | 87 |
| Samoa | 87 |
| Myanmar | 87 |
| Philippines | 86 |
| Lebanon | 86 |
| Cuba | 85 |
| Morocco | 85 |
| East Timor | 85 |
| Paraguay | 85 |
| Bolivia | 85 |
| Trinidad and Tobago | 85 |
| El Salvador | 84 |
| Pakistan | 84 |
| Papua New Guinea | 84 |
| Iran | 84 |
| Nicaragua | 84 |
| Syria | 84 |
| Seychelles | 84 |
| Tunisia | 84 |
| Libya | 84 |
| Honduras | 84 |
| Marshall Islands | 84 |
| Panama | 84 |
| Guyana | 84 |
| Fiji | 84 |
| United Arab Emirates | 83 |
| Afghanistan | 83 |
| Yemen | 83 |
| Saudi Arabia | 83 |
| Egypt | 83 |
| Oman | 83 |
| Kuwait | 83 |
| Bahrain | 83 |
| Belize | 83 |
| India | 82 |
| Sri Lanka | 81 |
| Maldives | 81 |
| Bangladesh | 81 |
| Mauritius | 81 |
| Ecuador | 80 |
| Madagascar | 79 |
| Guatemala | 79 |
| Barbados | 78 |
| Cape Verde | 78 |
| Bhutan | 78 |
| Nepal | 78 |
| Qatar | 78 |
| Zambia | 77 |
| Congo (Brazzaville) | 73 |
| Uganda | 73 |
| Mauritania | 73 |
| South Africa | 72 |
| Tanzania | 72 |
| Comoros | 72 |
| Kenya | 72 |
| Chad | 72 |
| Jamaica | 72 |
| Botswana | 72 |
| Sudan | 72 |
| Swaziland | 72 |
| Saint Kitts and Nevis | 72 |
| Malawi | 71 |
| Ghana | 71 |
| Cote d’Ivoire | 71 |
| Dominica | 71 |
| Saint Vincent and the Grenadines | 71 |
| Rwanda | 70 |
| Namibia | 70 |
| Burundi | 70 |
| Benin | 69 |
| Togo | 69 |
| Angola | 69 |
| Guinea-Bissau | 69 |
| Lesotho | 69 |
| Niger | 69 |
| Djibouti | 68 |
| Mali | 68 |
| Eritrea | 68 |
| Somalia | 68 |
| Nigeria | 67 |
| Liberia | 67 |
| Burkina Faso | 66 |
| Senegal | 66 |
| Gabon | 66 |
| Zimbabwe | 66 |
| Guinea | 66 |
| Gambia | 66 |
| Congo (Kinshasa) | 65 |
| Democratic Republic of the Congo | 65 |
| Sao Tome and Principe | 65 |
| Central African Republic | 64 |
| Sierra Leone | 64 |
| Cameroon | 64 |
| Mozambique | 64 |
| Ethiopia | 63 |
| Saint Lucia | 62 |
| Grenada | 62 |
| Antigua and Barbuda | 62 |
| Equatorial Guinea | 59 |
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