Selected High IQ Societies

Intellectual societies with no (particular) IQ threshold:

• Thinkers International, and their science discussion group
• Ne Plus Ultra (most members have been selected from the high IQ community)
• High IQSociety For The Gifted & Talented (requires membership in a high IQ society)
• Ars Mystica, Poetica, Scientifica (95th percentile accepted, 98th recommended, but "there is no impenetrable measure for acceptance")

84th percentile, 1 in 6.25, (115 sd=15, 116 sd=16, 124 sd=24), (1-sigma)

90th percentile, 1 in 10, (), ()

95th percentile, 1 in 20, (124-5 sd=15, 126-7 sd=16), (1.65-sigma)

• The International High IQ Society
• World Association for Highly Intelligent People
• Society for Intellectually Gifted Individuals with Disabilities
• Golden Dawn High IQ Society

98th percentile, 1 in 50 (130 sd=15, 132 sd=16, 148 sd=24), 2-sigma groups

• Deep Insight Society (97%)
• The Sigma Society: Sigma II (97.7%)
• Mensa International
• the High Potentials Society
• Mysterium Society (Creativity, Ingenuity, and Originality), and their yahoogroup
• the Smarts Society

99th percentile, 1 in 100, (135 sd=15, 137 sd=16), (2.33-sigma)

• Intertel
• Top One Percent Society
• The Mind Society, and their yahoogroup
• Elateneo/s, and alternate page?

99.5th percentile, 1 in 200, (139 sd=15, 141-2 sd=16), (2.58-sigma)

• Colloquy, and their yahoogroup
• The Poetic Genius Society
• Artifex Mens Congregatio ("Artistic Minds Society", private?)

99.7th percentile, 1 in 333, (141 sd=15, 144 sd=16), (2.75-sigma)

• Cerebrals Society, and their online forum
• ePiq Society (99.8%), and their online forum

99.9th percentile, 1 in 1000 (145-147 sd=15, 149-151 sd=16, 172 sd=24), 3-sigma groups

• The Sigma Society: Sigma III (99.87%)
• International Society for Philosophical Enquiry
• the Triple Nine Society
• One-in-a-Thousand Society, and Miyaguchi's portal
• The Glia Society
• The Ludomind Society (goal: to present beautiful puzzles)
• SesquIQ (a pro-Nature high IQ society)
• The Genius Society (must also be engaged in scientific research)
• CIVIQ Society
• Milenija
• The IQuadrivium Society
• The ISI Society (99.93%) (values creativity)
• the Minzar Society (99.9537%) (for Christians)
• Geniuses at this level: George Sand, Rousseau

99.97th percentile, 1 in 3333 (152 sd=15, 155 sd=16), (3.43-sigma)

• Introspective High IQ Society, their yahoogroup, and their Board (probably now defunct)
• Vertex Society (99.991%, 3.75-sigma, 1 in 11000, 156(sd15), 160(sd16))
• Geniuses at this level: Einstein, Copernicus, Stephen Hawking, Franklin, Haydn, George Eliot, Swift, Bunyan, Cervantes, Emerson, Balzac, Rembrandt

99.9967th percentile, 1 in 30000 (160 sd=15, 164 sd=16, 196 sd=24), 4-sigma groups

• The Prometheus Society
• The Epimetheus Society, and their yahoogroup
• Ultranet, and their online forum
• HELLIQ Society
• The Sigma Society: Sigma IV
• Platinum Society (99.9971%)
• Camp Archimedes, and their online forum (99.9971%)
• Geniuses at this level: Kepler, Spinoza, Kant, Plato, Raphael, Wagner, Handel, Hypatia, Johann Strauss, Luther, Thomas Chatterton, Sofia Kovalevskaya, Darwin, Faraday, James Watt, Carl von Linne, Hegel, Locke, Mozart, J.S. Bach, Mendelssohn, Beethoven, Pauling

99.9999th percentile, 1 in a million (175 sd=15, 180 sd=16), 5-sigma groups

• The Mega Society
• The Pi Society, and (alternate page)
• The PARS Society, and (alternate page?)
• The Omega Society, and their yahoogroup
• The OLYMPIQ Society (99.99997%)
• The Sigma Society: Sigma V (99.99997%)
• The Unicorn Society (99.99997%, Português)
• Geniuses at this level: Newton, Laplace, Voltaire, Wittgenstein, Arnauld, Schelling, Berkeley, Melanchthon, Albrecht von Haller, William Pitt the younger, Galileo, Lagrange, Descartes, Davy, D'Alembert, Bacon, Bertrand Russell, Michelangelo, Dickens, Hume, Hugo, Milton, Lord Byron, Alexander Pope, Madame De Stael, Gibbon

99.9999999th percentile, 1 in a billion (190 sd=15, 196 sd=16), 6-sigma groups

• Giga Society
• The Sigma Society: Sigma VI
• Geniuses at this level: Leibniz, Swedenborg, J.S. Mill, Grotius, Thomas Wolsey, Francis Galton, Pascal, Sarpi

(205 sd=15, 212 sd=16), 7-sigma

• Geniuses at this level: Leonardo da Vinci, Johann Wolfgang von Goethe

Tests & their scalings:

• mean=100, sd=15
  • WAIS (Wechsler Adult Intelligence Scale), official ceiling=150
  • WAIS-III (3rd Ed, 1997)
  • WAIS-R (-Rev), official ceiling=150
  • Wechsler-Bellvue
  • WISC (Wechsler Intelligence Scale for Children)
  • extrapolated scores above the "ceiling" (see "WAIS-R Regression Equations for the Full Scale IQ")
  • a plot I made summarizing the extrapolations
• mean=100, sd=16
  • CTMM (California Test of Mental Maturity), ceiling=158
  • Otis-Lennon
  • Stanford-Binet
• mean=100, sd=20
  • AGCT (Army General Classification Test)
• mean=100, sd=24
  • Cattell Verbal
  • W-87 (?)
• Scholastic:
  • ACT (American College Test), mean=17.5, sd=4.7, ceiling=36
  • ATGSB (Admissions Test for Graduate Study in Business) [746 for 99.9%]
  • GMAT (Graduate Management Admissions Test) [746 for 99.9%]
  • GRE(Graduate Record Examination), mean=772, sd=224, ceiling=1600
  • LSAT (Law School Admission Test) [764 for 99.9%]
  • MAT (Miller Analogies Test), mean=18.7, sd=19.3, ceiling=100
  • NMSQT (National Merit Scholarship Qualifying Test) [135 for 99.5%]
  • SAT (Scholastic Aptitude Test) prior to April 1994, mean=780, sd=206, ceiling=1600
• Uncommonly Difficult IQ Tests (and much more)
• IQ Test (several online)