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Meanwhile, boys outperformed girls in 32 countries (42.1%), while girls outperformed boys in 14 (18.4%). [32] On average, boys performed 5 points (1%) higher than girls. However, overall, the gender gap in math and science for boys and girls from similar socio-economic backgrounds was not significant. [32]
The challenges are particularly severe when it comes to girls; South Sudan has proportionately fewer girls going to school than any other country in the world. According to UNICEF, fewer than one per cent of girls complete primary education. Only one schoolchild in four is a girl and female illiteracy is the highest in the world.
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. [3] [4]
In a 2010 article about IQ in Italy, [80] Lynn contended that IQs are highest in the north (103 in Friuli-Venezia Giulia) and lowest in the south (89 in Sicily) and are correlated with average incomes, stature, infant mortality, literacy and education. The lack of any actual IQ test data (as Lynn used PISA score data) among other methodological ...
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]
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 ...
Intelligence quotient (IQ) tests do correlate with one another and that the view that the general intelligence factor (g) is a statistical artifact is a minority one. IQ scores are fairly stable during development in the sense that while a child's reasoning ability increases, the child's relative ranking in comparison to that of other ...
A 2010 systematic review by the same research team, along with Jerry S. Carlson, found that compared to American norms, the average IQ of sub-Saharan Africans was about 80. The same review concluded that the Flynn effect had not yet taken hold in sub-Saharan Africa.