About GIGA Society

GIGA Society is an extremely high-IQ society for those who score at or above IQ 190 (SD 15) on an acceptable high-range IQ test. “GIGA” stands for Global Intellectual Giga Association. We pride ourselves on being the official GIGA Society and aspire to be the official society for geniuses with a giga-level IQ of 190 or higher.

The official GIGA Society is distinct from other giga-level societies in that it accepts scores from a variety of high-range IQ tests which have been developed by test authors from around the world. There are other giga-level societies which accept only tests authored by their society’s own founder. This is an extremely biased policy. To combat this questionable practice, the official GIGA Society accepts the world’s best high-range tests for admission consideration.

The official GIGA Society was originally established in 2001 as the Esoteriq Society by Masaaki Yamauchi. GIGA Society shares the history and spirit of the Esoteriq Society. Currently, the two societies are operating independently.

Within GIGA Society, YoungHoon Kim, Masaaki Yamauchi, Claus Volko, and Kathy Kendrick serve as GIGA Society administrators.

GIGA Society has a total of nine members worldwide, including individuals from Asia, Europe, and America. Their diverse professional backgrounds include MIT graduates and university professors.

GIGA Society welcomes geniuses from all over the world. Are you eligible to become a member of GIGA Society?

About High Range IQ Test

High-range IQ tests were developed experimentally to measure IQ in the very high range. The more common official IQ tests, such as the Wechsler and Stanford-Binet, are limited in that they measure adult IQ only to approximately IQ 160 (SD 15). Theoretically, however, human intelligence can be calculated statistically up to roughly IQ 195 (SD 15) or higher. High-range IQ tests have been developed as a result of this statistical reason, and they are divided into three categories: verbal, numerical, and spatial. Based on a high-range IQ test, an individual may demonstrate high intelligence in one or more categories.

The method of standardization for these high-range IQ tests can be said to have a strong experimental tendency, because obtaining sufficient data is difficult due to the rarity of the measurement range. Scores based on the preliminary norm are also subject to similar skepticism. Even so, it is difficult to deny the reliability and validity of high-range IQ tests, given that the people who perform well on them also perform well on the official IQ tests.

Based on these high-range IQ tests, GIGA Society recognizes extremely high intelligence of IQ 190 (SD 15) and above. One of GIGA Society’s missions is to find additional excellent high-range IQ tests. This mission is currently overseen by a council of two members.


  1. Untimed high-range IQ test score ≥ IQ 190 (SD 15) on 1st or 2nd attempt.
  2. Once a test is used to admit a member to GIGA Society, it may not be used again for the admission of any other members.
  3. Tests are adopted through review by external advisors and internal administrators.

Membership Types

  1. All GIGA Society members have full membership.
  2. Membership is free of charge

Membership Benefits

  1. The function of GIGA Society is to certify the “giga” intelligence level of each member. Therefore, all GIGA Society members receive an official certificate from the society, documenting their IQ ≥ 190 (SD 15).
  2. Members communicate via private forums, through which they can interact with each other and collaborate on confidential projects.

NOTE: The word “gigabyte” means one billion bytes; thus, the term “giga” represents one billion (and because “giga” is a generic noun, it cannot be trademarked). GIGA Society, therefore, is a group of people whose members have an IQ of one in one billion.