^ society memberships

Dr Katsioulis (The GrIQ) is currently an active member in 28 High-IQ societies.

In 2003, he became the 6th member of the exclusive GIGA High IQ society. GIGA Society maintains a minimum entrance requirement of an IQ 196, sd 16, which is statistically expected to be achieved only by 1 individual out of 1,000,000,000 of the unselected population.