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Archive for April 19th, 2009

The presence of many lethal genetic diseases affecting the brain among Ashkenazi Jews may also increase their intelligence – so say Gregory Cochran (bottom), a physicist and genetics buff, and geneticist Henry Harpending (top), authors of the recently published, The 10,000 Year Explosion: How Civilization Accelerated Human Evolution.

From the Los Angeles Times:

“The biological basis for intelligence can be a thankless arena of inquiry. The authors of ‘The Bell Curve’ were vilified 15 years ago for suggesting genes played a role in IQ differences among racial groups.

“But Cochran, 55, and Harpending, 65, say there’s no question that as a whole, Ashkenazi Jews — those of European descent — have an abundance of brain power. (Neither man is Jewish.)

“Psychologists and educational researchers have pegged their average IQ at 107.5 to 115. That’s only modestly higher than the overall European average of 100, but the gap is large enough to produce a huge difference in the proportion of geniuses. When a group’s average IQ is 100, the percentage of people above 140 is 0.4%; when the average is 110, the genius rate is 2.3%.

“Though Jews make up less than 3% of the U.S. population, they have won more than 25% of the Nobel Prizes awarded to American scientists since 1950, account for 20% of this country’s chief executives and make up 22% of Ivy League students, the pair write.” (more @ LA Times)

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