Mensa International

Mensa is the largest and oldest high IQ society in the world.[3][4][5] It is a non-profit organization open to people who score at the 98th percentile or higher on a standardised, supervised IQ or other approved intelligence test.[6][7] Mensa formally comprises national groups and the umbrella organisation Mensa International, with a registered office in Caythorpe, Lincolnshire, England[8] (which is separate from the British Mensa office in Wolverhampton[9]). The word mensa (/ˈmɛnsə/, Latin: [ˈmẽːsa]) is Latin for 'table', as is symbolised in the organisation's logo, and was chosen to demonstrate the round-table nature of the organisation; the coming together of equals.[10]

Mensa International
Formation1 October 1946 (1946-10-01)[1]
Legal statusLimited non-profit organisation
PurposeHigh IQ society
HeadquartersSlate Barn, Church Lane, Caythorpe, Lincolnshire, England, United Kingdom
  • Worldwide
Björn Liljeqvist


Roland Berrill, an Australian barrister, and Dr. Lancelot Ware, a British scientist and lawyer, founded Mensa at Lincoln College, in Oxford, England, in 1946. They had the idea of forming a society for very intelligent people, the only qualification for membership being a high IQ.[6] It was ostensibly to be non-political and free from all other social distinctions (racial, religious, etc.).[10]

However, Berrill and Ware were both disappointed with the resulting society. Berrill had intended Mensa as "an aristocracy of the intellect", and was unhappy that a majority of Mensans came from humble homes,[11] while Ware said: "I do get disappointed that so many members spend so much time solving puzzles."[12]

American Mensa was the second major branch of Mensa. Its success has been linked to the efforts of early and longstanding organiser Margot Seitelman.[13]

Membership requirement

Mensa's requirement for membership is a score at or above the 98th percentile on certain standardised IQ or other approved intelligence tests, such as the Stanford–Binet Intelligence Scales. The minimum accepted score on the Stanford–Binet is 132, while for the Cattell it is 148.[14] Most IQ tests are designed to yield a mean score of 100 with a standard deviation of 15; the 98th-percentile score under these conditions is 131, assuming a normal distribution.

Most national groups test using well-established IQ test batteries, but American Mensa has developed its own application exam. This exam is proctored by American Mensa and does not provide a score comparable to scores on other tests; it serves only to qualify a person for membership. In some national groups, a person may take a Mensa-offered test only once, although one may later submit an application with results from a different qualifying test. The Mensa test is also available in developing countries like India, Pakistan, etc. and societies in developing countries have been growing at rapid pace.[14]


Mensa's constitution lists three purposes: "to identify and to foster human intelligence for the benefit of humanity; to encourage research into the nature, characteristics, and uses of intelligence; and to provide a stimulating intellectual and social environment for its members".[15]

To these ends, the organisation is involved with programs for gifted children, literacy, and scholarships, and it holds numerous gatherings including an annual summit.[16]


  • 2010-2015: Krs Escobar
  • 2013-2015: Elissa Rudolph
  • 2015-2019: Bibiána Balanyi
  • 2019-present: Bjorn Liljeqvist

Organisational structure

Mensa International consists of around 134,000 members,[2] in 100 countries,[17] in 51 national groups.[18] The national groups issue periodicals, such as Mensa Bulletin, the monthly publication of American Mensa,[19] and Mensa Magazine, the monthly publication of British Mensa.[20] Individuals who live in a country with a national group join the national group, while those living in countries without a recognised chapter may join Mensa International directly.

The largest national groups are:[21]

  • American Mensa, with more than 57,000 members,[22]
  • British Mensa, with over 21,000 members,[23] and
  • Mensa Germany, with more than 13,000 members.[24]

Larger national groups are further subdivided into local groups. For example, American Mensa has 134 local groups, with the largest having over 2,000 members and the smallest having fewer than 100.

Members may form Special Interest Groups (SIGs) at international, national, and local levels; these SIGs represent a wide variety of interests, ranging from motorcycle clubs to entrepreneurial co-operations. Some SIGs are associated with various geographic groups, whereas others act independently of official hierarchy. There are also electronic SIGs (eSIGs), which operate primarily as e-mail lists, where members may or may not meet each other in person.

The Mensa Foundation, a separate charitable U.S. corporation, edits and publishes its own Mensa Research Journal, in which both Mensans and non-Mensans are published on various topics surrounding the concept and measure of intelligence.


Mensa has many events for members, from the local to the international level. Several countries hold a large event called the Annual Gathering (AG). It is held in a different city every year, with speakers, dances, leadership workshops, children's events, games, and other activities. The American and Canadian AGs are usually held during the American Independence Day (4 July) or Canada Day (1 July) weekends respectively.

Smaller gatherings called Regional Gatherings (RGs), which are held in various cities, attract members from large areas. The largest in the United States is held in the Chicago area around Halloween, notably featuring a costume party for which many members create pun-based costumes.

In 2006, the Mensa World Gathering[25] was held from 8–13 August in Orlando, Florida to celebrate the 60th anniversary of the founding of Mensa. An estimated 2,500 attendees from over 30 countries gathered for this celebration. The International Board of Directors had a formal meeting there.

In 2010, a joint American-Canadian Annual Gathering was held in Dearborn, Michigan, to mark the 50th anniversary of Mensa in North America, one of several times the US and Canada AGs have been combined. Other multinational gatherings are the European Mensas Annual Gathering (EMAG) and the Asian Mensa Gathering (AMG).

Since 1990, American Mensa has sponsored the annual Mensa Mind Games competition, at which the Mensa Select award is given to five board games that are "original, challenging, and well designed".[26][27]

Individual local groups and their members host smaller events for members and their guests. Lunch or dinner events, lectures, tours, theatre outings, and games nights are all common.

In Europe since 2008 international meetings have been held under the name [EMAG] (European Mensa Annual Gathering), starting in Cologne in 2008.[28] Next editions were in Utrecht (2009), Prague (2010), Paris (2011), Stockholm (2012), Bratislava (2013), Zürich (2014), Berlin (2015), Kraków (2016), Barcelona (2017), Belgrade (2018) and Ghent (2019). The 2020 edition will take place in Brno, from July 29 to August 2. The gathering for 2021 is planned for Århus.[29]

In Asia there is an Asian Mensa Gathering (AMG) with rotating countries hosting the event.


All Mensa groups publish members-only newsletters or magazines, which include articles and columns written by members, and information about upcoming Mensa events. Examples include the American Mensa Bulletin,[30] the British Mensa magazine,[31] Serbian MozaIQ,[32] the Australian TableAus,[33] the Mexican El Mensajero,[34] and the French Contacts.[35] Some local or regional groups have their own newsletter, such as those in the United States, UK, Germany, and France.

Mensa International publishes a Mensa World Journal, which "contains views and information about Mensa around the world". This journal is generally included in each national magazine.[36][37][38]

Mensa also publishes the Mensa Research Journal, which "highlights scholarly articles and recent research related to intelligence". Unlike most Mensa publications, this journal is available to non-members.[39]


All national and local groups welcome children; many offer activities, resources, and newsletters specifically geared toward gifted children and their parents. Both American Mensa's youngest member (Christina Brown)[40] and British Mensa's youngest member (Adam Kirby) joined at the age of two.[41] The current youngest member of Mensa is Adam Kirby, from Mitcham, London, UK who was invited to join at the age of two years and four months and gained full membership at the age of two years five months. He scored 141 on the Stanford-Binet IQ test.[41][42] Elise Tan-Roberts of the UK is the youngest person ever to join Mensa, having gained full membership at the age of two years and four months.[41][43]

American Mensa's oldest member is 102,[44] and British Mensa had a member aged 103.[7]

According to American Mensa's website (as of 2013), 38 percent of its members are baby boomers between the ages of 51 and 68, 31 percent are Gen-Xers or Millennials between the ages of 27 and 48, and more than 2,600 members are under the age of 18. There are more than 1,800 families in the United States with two or more Mensa members.[44] In addition, the American Mensa general membership is "66 percent male, 34 percent female". The aggregate of local and national leadership is distributed equally between the sexes.[44]

See also


  1. "Mensa is 65 on 1st October – how Brilliant is that?". Mensa International. Retrieved 30 August 2014.
  2. "About Mensa International". Mensa International. 2017. Retrieved 23 April 2017.
  3. Percival, Matt (8 September 2006). "The Quest for Genius". CNN. Retrieved 30 October 2007.
  4. Moore, Hilary. "American Mensa and Activepackets Team to Provide Mobile Users With Mensa Genius Challenge". American Mensa. Retrieved 30 October 2007.
  5. Sharma, Mukul (30 January 2007). "IQ tests are about innate intelligence". The Times of India. India. Retrieved 3 November 2007.
  6. "Mensa Information". Mensa International.
  7. "FAQs - Full list". British Mensa. Retrieved 13 July 2014.
  8. "Home." Mensa International. Retrieved 11 May 2010. "Mensa's registered office is Slate Barn, Church Lane, Caythorpe, Podgorica, NG32 3EL, United Kingdom."
  9. "Contact Us". British Mensa. Retrieved 5 November 2015.
  10. "About Mensa International". Mensa International. Retrieved 17 September 2013.
  11. Victor Serebriakoff (1986). Mensa - The Society for the Highly Intelligent. Stein and Day. ISBN 978-0-8128-3091-0.
  12. Tammet, Daniel (2009). Embracing the Wide Sky: A Tour Across the Horizons of the Mind. Simon and Schuster. p. 40. ISBN 978-1416570134.
  13. Victor Serebriakoff (1986). Mensa - The Society for the Highly Intelligent. Stein and Day. p. 73. ISBN 978-0-8128-3091-0.
  14. "Submit Test Scores". American Mensa. Retrieved 2 June 2011.
  15. "The Constitution of Mensa" (PDF). Mensa International. Retrieved 13 October 2012.
  16. "Gifted youth". American Mensa. Retrieved 3 July 2019.
  17. "About Mensa".
  18. "National Groups".
  19. "Mensa Bulletin". American Mensa. Archived from the original on 11 October 2007. Retrieved 11 October 2007.
  20. "Welcome to British Mensa – The High IQ Society". British Mensa. Retrieved 11 October 2007.
  21. Stanislav Dimov (22 October 2011). "Thinking lessons introduced at school". Europost. Retrieved 13 July 2014.
  22. "American Mensa". American Mensa. Retrieved 13 July 2014.
  23. "British Mensa". British Mensa. Retrieved 13 July 2014.
  24. "Mensa: Ein Netzwerk für Hochbegabte". Mensa Germany. Retrieved 2 May 2017.
  25. "World Gathering 2006". American Mensa. Archived from the original on 4 July 2006.
  26. Loew, Tracy (21 May 2006). "Mensa still plays mind games after 60 years". USA Today. Retrieved 16 January 2007.
  27. Arsenault, Anne (22 April 2005). "Brainiac Central". St. Petersburg Times. Retrieved 16 January 2007.
  28. "EMAG". Retrieved 22 June 2019.
  29. "EMAG - European Mensa Annual Gathering". Retrieved 4 July 2019.
  30. "Mensa Bulletin". American Mensa Ltd. Retrieved 11 March 2012.
  31. "Mensa magazine". British Mensa. Archived from the original on 22 October 2009. Retrieved 11 March 2012.
  32. "Mensa Serbia (RS)". Mensa International. Retrieved 16 November 2014.
  33. "Mensa - the High IQ Society". Australian Mensa. Retrieved 13 December 2014.
  34. "Mensa - the High IQ Society". Mensa Mexico. Retrieved 1 February 2016.
  35. "Mensa France". Archived from the original on 16 June 2013. Retrieved 13 December 2014.
  36. "What Publications Come With Mensa Membership?". Mensa International Limited. Retrieved 11 March 2012.
  37. "International Journal". American Mensa Ltd. Retrieved 11 March 2012.
  38. TableAus, Australian and International Mensa News, November/December 2014 Edition 414
  39. "Mensa Research Journal". American Mensa Ltd. Retrieved 11 March 2012.
  40. Ringle, Haley (26 May 2009). "2-year-old joins group for high IQs". East Valley Tribune. Retrieved 18 August 2010.
  41. "Two-year-old becomes youngest boy to join Mensa". The Telegraph. 14 June 2013. Retrieved 18 June 2013.
  42. The Times (15 June 2013). "The two-year-old whose parents have to study to keep up with". The Times. Retrieved 15 June 2013.
  43. "Meet the World's Smartest Kid - ABC News". 1 May 2009. Retrieved 17 September 2015.
  44. "Demographically speaking..." American Mensa. Archived from the original on 10 February 2014. Retrieved 12 March 2013.CS1 maint: BOT: original-url status unknown (link)
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