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Ursprungligen postat av Badsector
Utbildning påverkar IQ mycket, mycket lite om ens alls.
Jag hittar inget stöd för det påståendet i din källa.
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Ursprungligen postat av Badsector
75% av din intelligens i vuxen ålder är genetiskt betingad.
http://en.wikipedia.org/wiki/Heritability_of_IQ
Först måste man konstatera att gener och miljö samverkar. Jag tycker att det här är ett bra citat:
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Psychologist Donald Hebb is said to have once answered a a journalist's question of "which, nature or nurture, contributes more to personality?" by asking in response, "which contributes more to the area of a rectangle, its length or its width?"
Speciellt svårt verkar det vara när det gäller IQ:
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The finding of rising heritability with age is counter-intuitive; it is reasonable to expect that genetic influences on traits like IQ should become less important as one gains experiences with age. However, that the opposite occurs is well documented. According to work by Robert Plomin,heritability estimates calculated on infant samples are as low as 20%, rising to around 40% in middle childhood, and ultimately as high as 80% in adult samples in the United States.[15] This suggests that the underlying genes actually express themselves by affecting a person's predisposition to build, learn, and develop mental abilities throughout the lifespan.
Hur miljön påverkar oss avgörs alltså i stor utsträckning av vilka gener vi har. Det krävs både gener och miljö för att utvecklas. Ytterligare ett citat för att klargöra det hela:
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Heritability increases with education and with social class, such that the children of highly educated parents are more likely to inherent traits.
Det här stycket besvarar frågan i den här tråden:
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According to anthropologist Mark Cohen, the frequently reported African mean IQ of 70 is "preposterous". Using Western standards, this would mean that African countries evidencing such a low IQ would be largely dysfunctional. Given that individuals in these countries lead "vibrant artistic, symbolic and spiritual lives", this is, according to Cohen, clearly not the case. Thus, he concludes, the IQ test results from Africa do not reflect actual intelligence levels.[48]
Differences in education, prolonged malnutrition, exposure to toxin, exposure to stress, and exposure to disease are all generally expected to contribute to the lower scores observed in developing countries.