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One study found that breastfeeding was linked to raised IQ (as much as 7 points when not controlling for maternal IQ) if the infants had an SNP coding for a "C" rather than G base within the FADS2 gene. Those with the "G" version showed no IQ advantage, suggesting a biochemical interaction of child's genes on the effect of breastfeeding.
Conversely, the international PISA exam provides representative samples. On the 2018 math PISA, there was no statistically significant difference between the performances of girls and boys in 39.5% of the 76 countries that participated. Meanwhile, boys outperformed girls in 32 countries (42.1%), while girls outperformed boys in 14 (18.4%). [32]
Among the findings of cognitive epidemiology is that men with a higher IQ have less risk of dying from coronary heart disease. [20] The association is attenuated, but not removed, when controlling for socio-economic variables, such as educational attainment or income. This suggests that IQ may be an independent risk factor for mortality.
Norwegian epidemiologists used military records to examine the birth order, health status, and IQ scores of nearly 250,000 18- and 19-year-old men born between 1967 and 1976.
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 ...
Declan Lopez’s IQ was determined to be 137, which is in the 99th percentile. That score led the kindergartner to be accepted into Mensa, a society for people with high intelligence quotients.
Intelligence as measured by Psychometric tests has been found to be highly correlated with successful training and performance outcomes (e.g., adaptive performance), [76] [77] [78] and IQ/g is the single best predictor of successful job performance; however, some researchers although largely concurring with this finding have advised caution in ...
According to the World Health Organization, "cervical cancer is the fourth most common cancer in women." An estimated 660,000 women were diagnosed with the cancer worldwide in 2022, and 350,000 ...