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  2. List of African countries by Human Development Index

    en.wikipedia.org/wiki/List_of_African_countries...

    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.

  3. IQ and the Wealth of Nations - Wikipedia

    en.wikipedia.org/wiki/IQ_and_the_Wealth_of_Nations

    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]

  4. Nations and IQ - Wikipedia

    en.wikipedia.org/wiki/Nations_and_IQ

    The 1981 article "Average IQ values in various European countries" by Vinko Buj is the only international IQ study that over a short time period has compared IQs using the same IQ test. Rindermann (2007) states that it is of dubious quality with scant information regarding how it was done.

  5. Intelligence quotient - Wikipedia

    en.wikipedia.org/wiki/Intelligence_quotient

    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.

  6. IQ and Global Inequality - Wikipedia

    en.wikipedia.org/wiki/IQ_and_Global_Inequality

    IQ and Global Inequality is a 2006 book by psychologist Richard Lynn and political scientist Tatu Vanhanen. [1] IQ and Global Inequality is follow-up to their 2002 book IQ and the Wealth of Nations, [2] an expansion of the argument that international differences in current economic development are due in part to differences in average national intelligence as indicated by national IQ estimates ...

  7. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    IQ scores can differ to some degree for the same person on different IQ tests, so a person does not always belong to the same IQ score range each time the person is tested (IQ score table data and pupil pseudonyms adapted from description of KABC-II norming study cited in Kaufman 2009). [12] [13] Pupil KABC-II WISC-III WJ-III Asher: 90: 95: 111 ...

  8. Heritability of IQ - Wikipedia

    en.wikipedia.org/wiki/Heritability_of_IQ

    IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults. The heritability of IQ increases with the child's age and reaches a plateau at 14–16 [9] years old, continuing at that level well into adulthood. However, poor prenatal environment, malnutrition and disease ...

  9. Effect of health on intelligence - Wikipedia

    en.wikipedia.org/wiki/Effect_of_health_on...

    Exposure to violence or trauma was correlated with a 7.5-point (SD, 0.5) decrement in IQ and a 9.8-point (SD, 0.66) decrement in reading achievement. [48] Violence may have a negative impact on IQ, or IQ may be protective against violence. [49] The causal mechanism and direction of causation is unknown. [48]