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Massive Study Searching For Genes Behind Intelligence Finds Little
An anonymous reader writes: It's been taken for granted that science would, one day, figure out what parts of our DNA make us smart (or not). But a huge new study done by a group of almost 60 researchers using genome data on over 100,000 people has come up empty-handed. The scientists first looked for differences in the genome that correlated with academic achievement. After narrowing it down to 69 individual sites, they gave cognitive tests to separate group of 24,000 people and looked for evidence of difference at those same locations (abstract). Most of the sites weren't significantly different from chance — the (already weak) genetic influence of genes on height has an effect 20 times greater. On top of that, the three gene locations that did seem to have a stronger correlation weren't involved in development of the nervous system.
The genes are obviously smart enough to hide from researchers.
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