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Behind the IQ numbers.


I suspect the findings in "Racial IQ Gap Narrows: Blacks gain 4 to 7 points on whites" (SN: 8/5/06, p. 85) might be correlated cor·re·late  
v. cor·re·lat·ed, cor·re·lat·ing, cor·re·lates

v.tr.
1. To put or bring into causal, complementary, parallel, or reciprocal relation.

2.
 with the reduction in lead exposure over the same timeframe. I wonder if the greater reduction in early-childhood blood lead for blacks might be sufficient to explain the effect described in the study.

RICHARD B. MOTT MOTT

mycobacteria other than tuberculosis.

MOTT Mycobacteria other than M tuberculosis An acronym for non-TB mycobacteria–eg, M avium-intracellulare complex, M chelonei, M kansasii, M malmoense, M xenopi
, RINGOES, N.J.

What can we conclude from these facts? Not much, because, as the psychometrician states, we do not actually know what intelligence is, nor do we know what intelligence tests actually measure other than performance on the tests themselves.

DAVID David, in the Bible
David, d. c.970 B.C., king of ancient Israel (c.1010–970 B.C.), successor of Saul. The Book of First Samuel introduces him as the youngest of eight sons who is anointed king by Samuel to replace Saul, who had been deemed a failure.
 P. VERNON, TUCSON, ARIZ ARIZ Arizona (old style) .
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Article Details
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Author:Vernon, David P.
Publication:Science News
Article Type:Letter to the editor
Date:Oct 14, 2006
Words:108
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