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Psychology unit 3 intelligence




Role of genetic factors in intelligence test performance

Bouchard and McGue investigated MZ twins who were reared apart in separate
environments and found a closer similarity in IQ scores even though they were
separated as they had concordance rates of 72% compared to DZ twins who…

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Psychology unit 3 intelligence




FADS2 gene found to promote intelligence if the child was breastfed as this
interacted with the C version of the gene. Children who had the weaker G version
of the gene didn't show this increase. This shows that the role of genes is
important but it's…

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