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Another biological influence at work“Scientists have discovered why some shorter children do worse at school than taller youngsters. A team from the University of Bristol found that children with lower levels of a height controlling hormone also had lower IQs. The study is the first to make a link between the insulin-like growth hormone and intelligence. Professor David Gunnell and his colleagues measured levels of Insulin Growth Factor IGF-I in the blood of 547 children, who also took an intelligence test at the age of eight. When the researchers compared IGF-I levels in the youngsters in the study, they found a significant link between the growth hormone and intelligence. For every 100 nanograms per millilitre increase in IGF-I levels, the IQ increased by three points. At the moment scientists do not know what happens in the body to link poor growth and impaired development in the brain. But one explanation could be that growth hormones also affect brain development. They said this effect seemed to be restricted to the verbal component of IQ, as the link was not seen in other tests ... The study, part of the long-running Children of the 90s project, is published in Pediatrics” More here Posted by jonjayray on Thursday, December 1, 2005 at 06:08 AM in IQ and Heredity Comments:2
Posted by scottynx on December 01, 2005, 04:57 PM | # Wouldn’t a taller child be looked on as more of a natural group leader by other children from a young age? The taller child will thus have more oppurtunities to make decisions for the group and have more oppurtunities to engage in coalition-building and diplomacy to keep the group running smoothly. This should highly stimulate the verbal part of intelligence. I know g is highly genetically heritable, but I don’t think it’s too much to believe that a high verbal stimulant boost starting from a very young age (as soon as children interact and talk) could moderately boost verbal IQ. 3
Posted by Pericles on December 01, 2005, 09:07 PM | # Honestly JJR, height is mostly genetic and stunted growth in the west is usually the result of vegetarism. http://www.second-opinions.co.uk/child_abuse.html I am firmly of the opinion that sound judgement depends upon good nutrition and regular exercise and when I have finished this jereboam of fine wine I shall try and take some, sometime, somewhere, somehow, hic! Actually, the point I am making here is that the MSM not only lies about immigration etc., it also diseminates misinformation about food. Barry Groves http://www.second-opinions.co.uk/ has the data that the food giants would rather you all did not know. Pericles Next entry: Europe’s first woman suicide bomber Previous entry: Another assassination attempt on Flemish nationalism |
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Posted by John S Bolton on December 01, 2005, 06:37 AM | #
This effect might show up between whites and NEasians, one being taller and having higher verbal IQ’a than the other. When comparisons of brain size are adjusted for height, some of what accounts for higher IQ might be factored out, on the above correlations. There is also a hard controversy opened up in Intelligence, over the Lynn and Vanhanen correlations of IQ with coloration, per capita income etc.