The list ranked people by IQ and was culled from an online ranking called The World Genius Directory. The directory, created by Dr. Jason Betts, is compiled from certified high-range intelligence tests sent in by listees.

 

Unlike IQ tests designed by psychologists, high-range IQ tests are crafted by amateurs and enthusiasts around the world who have a high IQ themselves (An IQ of at least 160, which is considered genius, is recommended).

"Intelligence tests designed by psychologists are limited in time that does not suit everyone," Ivec tells us. "Specifically, there are intelligent people, capable of performing complex actions and resolving complex tasks, although their speed of solving is low."