Average IQ by Country
| Country/Region | IQ (2003) | IQ (2010) |
| Hong Kong | 107 | 109 |
| Singapore | 105 | 109 |
| North Korea | 105 | 106 |
| South Korea | 106 | 106 |
| Japan | 105 | 106 |
| People’ Republic of China | 101 | 106 |
| Taiwan | 104 | 106 |
| Italy | 102 | 103 |
| Mongolia | 99 | 102 |
| Iceland | 98 | 102 |
| Switzerland | 101 | 102 |
| Austria | 102 | 100 |
| Luxembourg | 101 | 100 |
| Netherlands | 102 | 100 |
| Norway | 99 | 100 |
| United Kingdom | 100 | 100 |
| Belgium | 100 | 100 |
| Canada | 98 | 100 |
| Estonia | 98 | 99 |
| Finland | 97 | 99 |
| Poland | 99 | 99 |
| Germany | 102 | 98 |
| New Zealand | 100 | 98 |
| Sweden | 101 | 98 |
| Andorra | 97 | 98 |
| Australia | 98 | 98 |
| Czech Republic | 97 | 98 |
| Denmark | 98 | 98 |
| France | 98 | 98 |
| Latvia | 97 | 98 |
| Spain | 97 | 98 |
| United States | 98 | 98 |
| Russia | 97 | 98 |
| Hungary | 99 | 97 |
| Belarus | 96 | 97 |
| Malta | 96 | 97 |
| Ukraine | 96 | 97 |
| Slovakia | 96 | 96 |
| Uruguay | 96 | 96 |
| Moldova | 95 | 96 |
| Israel | 95 | 96 |
| Armenia | 94 | 95 |
| Portugal | 95 | 95 |
| Georgia | 94 | 95 |
| Kazakhstan | 93 | 95 |
| Romania | 94 | 94 |
| Vietnam | 96 | 94 |
| Bulgaria | 93 | 93 |
| Argentina | 95 | 93 |
| Malaysia | 92 | 92 |
| Greece | 92 | 92 |
| Ireland | 93 | 92 |
| Cambodia | 90 | 92 |
| Brunei | 92 | 91 |
| Cyprus | 92 | 91 |
| Republic of Macedonia | 93 | 91 |
| Thailand | 91 | 91 |
| Lithuania | 96 | 90 |
| Albania | 90 | 90 |
| Bermuda | N/A | 90 |
| Kyrgyzstan | 88 | 90 |
| Croatia | 90 | 90 |
| Bosnia and Herzegovina | N/A | 90 |
| Mexico | 88 | 90 |
| Turkey | 90 | 90 |
| Chile | 93 | 90 |
| Laos | 89 | 89 |
| Mauritius | 83 | 89 |
| Costa Rica | 90 | 89 |
| Cook Island | N/A | 89 |
| Ecuador | 83 | 89 |
| Suriname | 89 | 89 |
| Samoa | 88 | 88 |
| Bolivia | 86 | 88 |
| Guyana | 84 | 88 |
| Myanmar | 87 | 88 |
| Azerbaijan | 87 | 87 |
| Brazil | 87 | 87 |
| East Timor | N/A | 97 |
| Iraq | 87 | 87 |
| Tajikistan | 87 | 87 |
| Turkmenistan | 87 | 87 |
| Uzbekistan | 87 | 87 |
| Indonesia | 88 | 86 |
| Kuwait | 84 | 86 |
| Philippines | 86 | 86 |
| Seychelles | 83 | 86 |
| Cuba | 85 | 86 |
| Tonga | 86 | 85 |
| Fiji | 85 | 85 |
| New Caledonia | N/A | 85 |
| Kiribati | 85 | 85 |
| Trinidad and Tobago | 82 | 85 |
| Yemen | 83 | 85 |
| Belize | 84 | 85 |
| Peru | 88 | 84 |
| Iran | 84 | 84 |
| Marshall Islands | 84 | 84 |
| Pakistan | 82 | 84 |
| Panama | 84 | 84 |
| Paraguay | 85 | 84 |
| Colombia | 87 | 84 |
| Puerto Rico | 84 | 84 |
| Afghanistan | 83 | 84 |
| Federated States of Micronesia | 84 | 84 |
| Saudi Arabia | 83 | 84 |
| Solomon Island | 84 | 84 |
| The Bahamas | 80 | |
| United Arab Emirates | 83 | 84 |
| Vanuatu | 84 | 84 |
| Morocco | 84 | 83 |
| Jordan | 85 | 83 |
| Venezuela | 86 | 83 |