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To: allmendream
Here's the real meaning of 40% heritability of Intelligence.

Look at the distribution curve. Approximately 50% of the population will be within 10 points of the median, 68% within 15 points, 90-94% within 25 points.

That means about 55% of Jews and 50% of East Asians will have IQs above 110. The figure for blacks is 3-5%.

That 25 point difference in medians is 40% due to genes, 10% due to environmental factors which cannot be manipulated, and 50% due to environmental factors which, in theory, can be.

It's completely utopian to think that environmental factors can be equalized. Far more realistic is a goal of 25-50% equality...which means the black median IQ can be moved to the right - with lots of hard work - by 3-7 points to 88 to 92. Meaning only 8-13% of blacks will have an IQ above 110.

That's a social disaster.

138 posted on 07/10/2008 6:35:44 PM PDT by liberallarry
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To: liberallarry
How is working on educating people a social disaster?

Got a source for your numbers?

According to the numbers you provided....If the median African American IQ is 90 then 50% of that population is within 80 to 100 IQ, 16% would be 105 or higher and 3% would be 115 IQ or higher.

If the median Jewish or East Asian IQ is 110 then 50% are within 100 to 120 IQ, 16% would be 125 or higher and 3% would be 135 or higher.

If environmental factors account for 60% of that discrepancy then how would it be a social disaster to attempt to ameliorate those environmental factors?

If those factors could be changed completely and African Americans raised like Asians and Jews (which is of course unrealistic) the median African American IQ could be raised to 102, which is a couple points higher than the Euro American average.

139 posted on 07/10/2008 7:01:55 PM PDT by allmendream
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