According to a study conducted by a number of professors in psychology and political science in more than 80 countries during the month of November 2017, that Iraq ranked first in the smartest Arab population at an average rate of 87. 
Richard British Professor of Psychology and Professor Tato in the political science study that the differences in national income are linked to differences in the average IQ, and differences in the average national IQs An important factor, but not the only one, contributing to differences in national wealth and economic growth rates. 
According to the study, Hong Kong ranked first in the world's highest IQ, shared by Singapore at the same rate followed by South Korea, Japan and shared by China.