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Mensa is the largest and oldest
high-IQ society A high-IQ society is an organization that limits its membership to people who have attained a specified score on an IQ test, usually in the top two percent of the population (98th percentile) or above. These may also be referred to as genius socie ...
in the world. It is a
non-profit organisation A nonprofit organization (NPO) or non-profit organisation, also known as a non-business entity, not-for-profit organization, or nonprofit institution, is a legal entity organized and operated for a collective, public or social benefit, in co ...
open to people who score at the 98th
percentile In statistics, a ''k''-th percentile (percentile score or centile) is a score ''below which'' a given percentage ''k'' of scores in its frequency distribution falls (exclusive definition) or a score ''at or below which'' a given percentage fall ...
or higher on a standardised, supervised IQ or other approved intelligence test. Mensa formally comprises national groups and the umbrella organisation Mensa International, with a registered office in
Caythorpe, Lincolnshire Caythorpe is a large village and civil parish in the South Kesteven district of Lincolnshire, England. The population at 2011 census was 1,374. It is situated on the A607, approximately south from Leadenham and north from Grantham. Caythor ...
, England, which is separate from the British Mensa office in
Wolverhampton Wolverhampton () is a city, metropolitan borough and administrative centre in the West Midlands, England. The population size has increased by 5.7%, from around 249,500 in 2011 to 263,700 in 2021. People from the city are called "Wulfrunians ...
. The word ''mensa'' (, ) 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.


History

Roland Berrill Roland Fabien Berrill (1897–1962) was a British-Australian who was the co-founder (with the English barrister Lancelot Ware) of Mensa, the international society for intellectually gifted people. The founding of Mensa Mensa was founded by Be ...
, an Australian
barrister A barrister is a type of lawyer in common law jurisdictions. Barristers mostly specialise in courtroom advocacy and litigation. Their tasks include taking cases in superior courts and tribunals, drafting legal pleadings, researching law and givin ...
, and Lancelot Ware, a British scientist and lawyer, founded Mensa at Lincoln College, in
Oxford Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the ...
, England in 1946, with the intention of forming a society for the most intelligent, with the only qualification being a high IQ. The society was ostensibly to be non-political in its aims, and free from all other social distinctions, such as race and religion. 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 the majority of members came from working or lower-class homes, while Ware said: "I do get disappointed that so many members spend so much time solving puzzles." American Mensa was the second major branch of Mensa. Its success has been linked to the efforts of early and longstanding organiser Margot Seitelman. In 2021, British Mensa's web servers suffered a security breach in which member data was compromised. Two board directors resigned because of the relaxed
cybersecurity Computer security, cybersecurity (cyber security), or information technology security (IT security) is the protection of computer systems and networks from attack by malicious actors that may result in unauthorized information disclosure, t ...
.


Membership requirement

Mensa's requirement for membership is a score at or above the 98th
percentile In statistics, a ''k''-th percentile (percentile score or centile) is a score ''below which'' a given percentage ''k'' of scores in its frequency distribution falls (exclusive definition) or a score ''at or below which'' a given percentage fall ...
on certain standardized 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 and 130 in the Wechsler tests ( WAIS, WISC). Most
IQ test An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern (psychologist), William Stern for th ...
s are designed to yield a
mean There are several kinds of mean in mathematics, especially in statistics. Each mean serves to summarize a given group of data, often to better understand the overall value ( magnitude and sign) of a given data set. For a data set, the '' ar ...
score of 100 with a
standard deviation In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, whil ...
of 15; the 98th-percentile score under these conditions is 131, assuming a
normal distribution In statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is : f(x) = \frac e^ The parameter \mu ...
. 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 some developing countries such as India and Pakistan, and societies in developing countries have been growing at a rapid pace.


Organizational structure

Mensa International consists of around 134,000 members in 100 countries and in 54 national groups. The national groups issue periodicals, such as ''Mensa Bulletin'', the monthly publication of American Mensa, and ''Mensa Magazine'', the monthly publication of British Mensa. Individuals who live in a country with a national group join the national group, while those living in countries without a recognized chapter may join Mensa International directly. The largest national groups are: * American Mensa, with more than 57,000 members, * British Mensa, with over 21,000 members, * Mensa Germany, with about 15,000 members. 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 email 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.


Gatherings

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 Canada Day (french: Fête du Canada), formerly known as Dominion Day (french: Fête du Dominion), is the national day of Canada. A federal statutory holiday, it celebrates the anniversary of Canadian Confederation which occurred on July 1, 18 ...
(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 (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Count ...
area around
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, notably featuring a costume party for which many members create pun-based costumes. In 2006, the Mensa World Gathering was held from 8–13 August in
Orlando, Florida Orlando () is a city in the U.S. state of Florida and is the county seat of Orange County. In Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831, according to U.S. Census Bureau figures re ...
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 Dearborn is a city in Wayne County in the U.S. state of Michigan. At the 2020 census, it had a population of 109,976. Dearborn is the seventh most-populated city in Michigan and is home to the largest Muslim population in the United States per ...
, 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 Mensa Select is an annual award given by American Mensa Mensa is the largest and oldest high-IQ society in the world. It is a non-profit organisation open to people who score at the 98th percentile or higher on a standardised, supervised ...
award is given to five board games that are "original, challenging, and well designed". 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 MAG(European Mensa Annual Gathering), starting in Cologne that year. The next meetings 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 event was postponed and took place in 2021 in Brno. The 2022 event was held in Strasbourg, and the following year's event will be held in Rotterdam (2023). In the Asia-Pacific region, there is an Asia-Pacific Mensa Annual Gathering (AMAG), with rotating countries hosting the event. This has included Gold Coast, Australia (2017), Cebu, Philippines (2018), New Zealand (2019), and South Korea (2020).


Publications

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'', the British ''Mensa'' magazine, Serbian ''MozaIQ'', the Australian ''TableAus'', the Mexican ''El Mensajero'', and the French ''Contacts''. 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.''TableAus'', Australian and International Mensa News, November/December 2014 Edition 414 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.


Demographics

All national Mensas have to accept children. However some national Mensas don't test the children themselves; many offer activities, resources, and newsletters specifically geared toward gifted children and their parents. Both American Mensa's youngest member ( Kashe Quest), British Mensa's youngest member (Adam Kirby), and several Australian Mensa members joined at the age of two. The current youngest member of Mensa is Adam Kirby, from Mitcham,
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
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. 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. In 2018, Mehul Garg became the youngest person in a decade to score the maximum of 162 in the test. American Mensa's oldest member is 102, and British Mensa had a member aged 103. According to American Mensa's website (), 38 percent of its members are
baby boomers Baby boomers, often shortened to boomers, are the Western demographic cohort following the Silent Generation and preceding Generation X. The generation is often defined as people born from 1946 to 1964, during the mid-20th century baby boom. ...
between the ages of 51 and 68, 31 percent are Gen-Xers or
Millennials Millennials, also known as Generation Y or Gen Y, are the Western demographic cohort following Generation X and preceding Generation Z. Researchers and popular media use the early 1980s as starting birth years and the mid-1990s to early 20 ...
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. 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.


See also

* List of notable Mensans * List of Mensa Select recipients * IQ classification *
IQ Award The IQ Award is a prize donated by the high- IQ association Mensa to honor people and organisations who have made remarkable contributions to public welfare by an intelligent idea, scientific research about human intelligence or the positive imag ...
* Triple Nine Society *
Intertel Intertel (previously the International Legion of Intelligence) is a high-IQ society founded in 1966, that is open to those who have scored at or above the 99th percentile (top 1%) on one of various standardized tests of intelligence. It has been ...
, high-IQ society


References


External links

*
(alternative URL)


{{Authority control 1946 establishments in England Organizations established in 1946