Where Intellects Meet

The USIA: United Sigma Intelligence Association, formerly United Sigma Korea, is the exclusively intellectual society with IQ 180 S.D.16, as the first and the oldest high IQ society in South Korea, higher than the Mensa IQ 132 S.D. 16 and even higher than the Mega Society IQ 176 S.D.16.

With an international scope, USIA is 3 sigma, 4 sigma, and 5 sigma umbrella society, which was founded in 2007 by Dr. Hankyung Lee, M.D.


“All men by nature desire to know.” — Aristotle

“The object of knowledge is what exists and its function to know about reality.” — Plato