Ashkenazi Jews are smart. Shockingly brilliant, in general. Impressive in brain power. How did they get that way?
Ashkenazi Jews, aka Ashkenazim, are the descendants of Jews from medieval Alsace and the Rhine Valley, and later, from throughout Eastern Europe. Originally, of course, they were from Israel. Genetic research from the Albert Einstein College of Medicine suggests that the Ashkenazi bloodline branched away from other Jewish groups there 2,500 years ago, and that 40% of them are descended from only four Jewish mothers. Approximately 80% of the Jews in the world today are Ashkenazim, with the remainder primarily Sephardic.
Researchers who study the Ashkenazim agree that the children of Abraham are on top of the IQ chart. Steven Pinker — who lectured on “Jews, Genes, and Intelligence” in 2007 — says “their average IQ has been measured at 108-115.” Richard Lynn, author of “The Intelligence of American Jews” in 2004, says it is “only” a half-standard higher: 107.5. Henry Harpending, Jason Hardy, and Gregory Cochran, University of Utah authors of the 2005 research report, “Natural History of Ashkenazi Intelligence,” state that their subjects, “score .75 to 1.0 standard deviations above the general European average, corresponding to an IQ of 112-115.” Charles Murray, in his 2007 essay “Jewish Genius,” says “their mean is somewhere in the range of 107-115, with 110 being a plausible compromise.”
A Jewish average IQ of 115 is 8 points higher than the generally accepted IQ of their closest rivals–Northeast Asians–and approximately 40% higher than the global average IQ of 79.1 calculated by Richard Lynn and Tatu Vanhanen in IQ and Global Inequity.
Plus, contemplate this astounding tidbit: Ashkenazi “visual-spatial” IQ scores are only mediocre; in one study their median in this category was a below-average 98. They surmount this liability by logging astronomic figures in “verbal IQ”, which includes verbal reasoning, comprehension, working memory and mathematical skill; a 1958 survey of yeshiva students discovered a median verbal IQ of 125.6.
What does it mean that Ashkenazim have a high IQ, in terms of producing “geniuses”? With their population so small — a mere 0.25 of the world total — does it make any serious difference? The answer is YES. A “bell curve” is used to illustrate IQ percentile in a specific group — in a “general population” where IQ average is 100 the curve assumes these proportions:
less than 70 IQ — 2.5%
70-85 IQ — 12.5%
86-100 IQ — 35%
101-115 IQ — 35%
116-130 IQ — 12.5%
greater than 130 IQ — 2.5%
Applying the same bell curve for Ashkenazim, but with a 17-point upward lift in median IQ (using the From Chance To Choice digit) produces the IQ upgrade below:
less than 87 IQ — 2.5%
88-102 IQ — 12.5%
103-117 IQ — 35%
118-132 IQ — 35%
133-148 IQ — 12.5%
greater than 148 IQ — 2.5%
This shifting upward of the bell curve by more than a standard deviation (15 points) means that more than five times as many Ashkenazim are eligible for Mensa (minimum 130 …read more