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The table below presents the latest Human Development Index (HDI) for countries in Africa as included in the United Nations Development Programme's Human Development Report, released on 13 March 2024 and based on data collected in 2024. [1] As of 2024, all African UN member states are included in the report.
The IQ figures are based on 3 different studies for 17 nations, two studies for 30 nations, and one study for 34 nations. There were actual tests for IQ in the case of 81 countries out of the 185 countries studied. For 104 nations there were no IQ studies at all and IQ was estimated based on the average IQ of surrounding nations. [2]
In 2009 Jelte M. Wicherts, Conor V. Dolan, and Han L.J. van der Maas conducted a new analysis of IQ in sub-Saharan Africa, which was critical of many of Lynn and Vanhanen's methods. [13] Wicherts et al. concluded that Lynn and Vanhanen had relied on unsystematic methodology by failing to publish their criteria for including or excluding studies.
Christopher Michael Langan (born March 25, 1952) is an American horse rancher and former bar bouncer, known for scoring highly on an IQ test that gained him entry to a high IQ society, and for being formerly listed in the Guinness Book of Records high IQ section under the pseudonym of Eric Hart, alongside Marilyn vos Savant and Keith Raniere ...
Isla McNabb became Mensa's youngest female member last year at just 2 years old. Her parents recently explained why they got her tested for the group.
The Mega Test yields IQ standard scores obtained by multiplying the subject's normalized z-score, or the rarity of the raw test score, by a constant standard deviation and adding the product to 100, with Savant's raw score reported by Hoeflin to be 46 out of a possible 48, with a 5.4 z-score, and a standard deviation of 16, arriving at a 186 IQ ...
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An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months.