AFP:

Scientists on Monday announced the discovery of 52 genes linked to human intelligence, 40 of which have been identified as such for the first time.

The findings also turned up a surprising connection between intelligence and autism that could one day help shed light on the condition's origins.

Taken together, the new batch of "smart genes" accounted for 20 percent of the discrepencies in IQ test results among tens of thousands of people examined, the researchers reported in the journal Nature Genetics.

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