Qualifications

USIA Membership is free of charge and this policy will not change.

ESA: Extreme Sigma Associate Society

≥ IQ 175 (S.D. 15, Wechsler Scale)
IQ 180 (S.D. 16, Stanford-Binet Scale)
≥ IQ 220 (S.D. 24, Cattell Scale)
≥ IQ 220 (S.D. 24, Mensa Korea Scale)

1.1. Requirement: Evidence of one standardized IQ test score officially accredited by a professional psychologist (Full documents) at or above IQ Four SD, 1st attempt. (Please see 4. Note.)

1.2. RequirementEvidence of one score from a standardized IQ test at or above IQ 180 sd16 at 1st attempt, or Evidence one score of approved high range intelligence test (created by whom having PhD or its equivalent), at or above IQ 180 sd16.

1.3. Alternative: Evidence Profoundly High Profile at least from one field in real world. (e.g. top-class education attainment; world-class research achievement in each academic field; winner in a major intellectual championship)

1.4. Alternative: Having one of full memberships from Mega Society, Omega Society or Olympiq Society would qualify to join ESA, only if having one standardized IQ test score of 4 sigma (full scale) or a doctoral degree accredited by a top-class university. 

*A full member of Mega International Society automatically qualify for the full membership of Extreme Sigma Associate, ESA Society.

1.5. For any inquiry of ESA membership, please fill out, only via the Contact form.


FSA: Four Sigma Associate Society

≥ IQ 160 (S.D. 15, Wechsler Scale)
≥ IQ 164 (S.D. 16, Stanford-Binet Scale)
≥ IQ 196 (S.D. 24, Cattell Scale)
≥ IQ 196 (S.D. 24, Mensa Korea Scale)

2.1. Requirement: Evidence of one standardized IQ test score officially accredited by a professional psychologist (Full documents) as the full scale at or above IQ 164 sd16 at 1st attempt. (Please see 4. Note.)

2.2. Alternative: Having one of full memberships from Ultranet Society of Mega Foundation, and Epimetheus Society would qualify to join FSA.

2.3. Alternative: Having a full membership of TSA with a doctoral degreeaccredited by a top-class university would qualify to join FSA.

2.4. For any inquiry of FSA membership, please fill out, only via the Contact form.


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TSA: Three Sigma Associate Society

≥ IQ 145 (S.D. 15, Wechsler Scale)
≥ IQ 148 (S.D. 16, Stanford-Binet Scale)
≥ IQ 172 (S.D. 24, Cattell Scale)
≥ IQ 172 (S.D. 24, Mensa Korea Scale)

3.1. Requirement: Evidence of one standardized IQ test score signed by a professional psychologist (Full documents) at or above IQ 148 sd16 at 1st attempt. (Please see 4. Note.)

3.2. Alternative: Having one of full memberships from Triple Nine Society, or One in a Thousand Society (OATHS) would qualify to join TSA.

3.3. For any inquiry of TSA membership, please fill out, only via the Contact form.


4. Note

There’s few honorary and special members in the United Sigma Korea. Theses memberships are NOT accepted from any application; We do NOT accept any standardized IQ test score from Cattell and Stanford-Binet(old), for ESA and FSA membership; We do NOT accept any standardized IQ test score unless there are signature, contact information and Full documents; All of test scores submitted should be contacted with each registered psychologist or test author, clearly; Any IQ score should be recorded in the official psychological association in each country; If suspected, the score provided could be confirmed via each country official psychological association(Each applicant should provide the evidence through); All of documents should be written in English language(except for South Korean); Any applicant (even from South Korea) should have language fluency in English.