Based on the information at the website of IQ research dot info, the average IQ of more than 80 countries have been conducted through a period of 5 years of studies by two professors. These IQ numbers came from a work carried out from 2002 to 2006 by Richard Lynn, a British Professor of Psychology, and Tatu Vanhanen, a Finnish Professor of Political Science. Richard and Tatu argues that differences in national income, are correlated with differences in the average rage national intelligence quotient (IQ). They further argue that differences in average national IQs constitute one important factor, but not the only one, contributing to differences in national wealth and rates of economic growth. Ranking Top in World Ranking of Countries by their Average IQ are Singapore, and Hong Kong, with IQ of 108. Second Ranking Country is South Korea, with IQ of 106. Third Ranking Countries are China and Japan, with IQ of 105. Fourth Ranking country is Taiwan, with IQ of 104. Fifth Ranking Country is Italy, with IQ of 102. Sixth Ranking Countries are Iceland, Mongolia, and Switzerland, with IQ of 101.