Admission Criteria:

Fee: donation to any philanthropic entity that you want. Suggestions:
www.hiqh.org
www.care.org
Minimum of 50 euros or equivalent. Send your deposit voucher close to your admission proposal.

Full Members:
A - Tests administered without a time limit:
1 - Sigma Test, Sigma Associations Test e Sigma Analogy Test: 164
2 - Mental Performance Test (Carlos Simões): 164
3 - Eureka Test, G-Test (Nikos Lygeros): 164
4 - Encephalist-R, MAAN or TLAP, N-VCPE-R (Xavier Jouve): 164
5 - Test for Exceptional Intelligence (International High IQ Society): 164
6 - Mega Test (taken before April 24, 1999), Power Test, Titan Test (taken before April 24, 1999),  Ultra Test (Ronald Hoeflin): 164
7 - Logima Strictica 36 (Robert Lato): 164
8 - Analogies #1, Cooijmans Intelligence Test, Daedalus Test, Final Test, Isis Test, Nemesis Test, Space, Time & Hyperspace, Test for Genius (long form), Test to End All Tests (Paul Cooijmans): 164
9 - 9I6 (Laurent Dubois): 164
10 - W-87 (Christopher Harding): 164
11 - Hepta Test (Alexandre Maluf): 164
12 - X-Test (Lloyd King): 164
13 - I - Mensa International Contest: 164
13.1 - II - Mensa International Contest (Albert Frank & Philippe Jacqueroux): 164
13.2 - International Contest of Logical Sequences (Albert Frank): 164
 
B - Supervised tests with a time limit:
1 - Stanford-Binet IQ test: 164
2 - Wechsler IQ test: 160 (SD 15)
3 - Cattell Culture Fair: 196 (SD 24)
4 - Cattell Verbal: 196 (SD 24)
5 - California Test of Mental Maturity: 164
6 - Raven’s Advanced Progressive Matrices Set II (20 min): raw score 36/36.
7 - GRE (verbal + quantitative): 1560
8 - SAT (taken before April 1, 1995): 1600

Prospective members):
A - Other scores and achievements, academic degrees etc.:
1 - Chess player with FIDE rating 2500 (2100 for women) with at least an IQ score above 150 (sd=16).
2 - Correspondence chess player with ICCF rating 2500 (2400 for women) with at least an IQ score above 150 (sd=16).
3 - Ph.D. Summa Cum Laude in any discipline with at least an IQ score above 150 (sd=16).
4 - Ph.D. Honoris Causa.
5 - National Medallist in Mathematics Olympiads in any country with at least an IQ score above 150 (sd=16).
6 - Shihan (Rokku-Dan) in Go or Soroban with at least an IQ score above 150 (sd=16).
7 - BrainMaster + 10 in Think-Fast with at least an IQ score above 150 (sd=16).

If you want, you can submit good articles by Sigma V e-Magazine during 1 year. If five or more articles are accepted for publication, you can be invited to be Full Subscriber.

Full Subscribers (Writer and Reader):
A - Tests administered without a time limit:
1 - Sigma Test, Sigma Associations Test e Sigma Analogy Test: 150
2 - Mental Performance Test (Carlos Simões): 150
3 - Eureka Test, G-Test (Nikos Lygeros): 150
4 - Encephalist-R, MAAN or TLAP, N-VCPE-R (Xavier Jouve): 150
5 - Test for Exceptional Intelligence (International High IQ Society): 150
6 - Mega Test (taken before April 24, 1999), Power Test, Titan Test (taken before April 24, 1999),  Ultra Test (Ronald Hoeflin): 150
7 - Logima Strictica 36 (Robert Lato): 150
8 - Analogies #1, Cooijmans Intelligence Test, Daedalus Test, Final Test, Isis Test, Nemesis Test, Space, Time & Hyperspace, Test for Genius (long form), Test to End All Tests (Paul Cooijmans): 150
9 - 9I6 (Laurent Dubois): 150
10 - W-87 (Christopher Harding): 150
11 - Hepta Test (Alexandre Maluf): 150
12 - X-Test (Lloyd King): 150
13 - I - Mensa International Contest: 150
13.1 - II - Mensa International Contest (Albert Frank & Philippe Jacqueroux): 150
13.2 - International Contest of Logical Sequences (Albert Frank): 150
 
B - Supervised tests with a time limit:
1 - Stanford-Binet IQ test: 150
2 - Wechsler IQ test: 147 (SD 15)
3 - Cattell Culture Fair: 175 (SD 24)
4 - Cattell Verbal: 175 (SD 24)
5 - California Test of Mental Maturity: 150
6 - Raven’s Advanced Progressive Matrices Set II (40 min): raw score 32/36.
7 - GRE (verbal + quantitative): 1450
8 - SAT (taken before April 1, 1995): 1425

C - Special invitees:
1 - They are not accepted proposed of admission with base in this criterion. The members can suggest names and the approved ones will receive invitations. Prominent intellectuals whose sum of the works is considered representative of the level of rarity 99.9% or above are approved. The approval requests independent analysis of at least 3 members and 75% of favorable votes (abstinences are not considered).
 
Friends Subscribers (Readers):
A - Lifetime Member, or Lifetime Subscriber, or Lifetime Registered Visitor of the Sigma Society.
1 - If you want, you can submit good articles by Sigma V e-Magazine during 1 year. If two or more articles are accepted for publication, you can be invited to be Full Subscriber.

B - Special invitees (invited by the founder).