latest Euro ROHS fun
William Sommerwerck wrote:
Were the two groups of children controlled for family background?
Those with the higher lead might have been from lower-income
communities with poorer parenting.
I think that was his point.
It was the opposite. The lowered scores were supposedly due /solely/ to the
higher lead levels, and had no other cause.
I meant *Jeff's* point, not that of the original researcher.
Jerry
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