Journal
ARCHIVES OF CLINICAL NEUROPSYCHOLOGY
Volume 16, Issue 4, Pages 403-431Publisher
OXFORD UNIV PRESS
DOI: 10.1016/S0887-6177(00)00090-1
Keywords
blood lead; intelligence; IQ; neuropsychological functioning; neurotoxins; lead research
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This paper addresses the points raised by five groups of scientists who were invited to respond to my article on the relationship of low blood lead to IQ loss. I dealt with these comments as a scientist who believes that the case is not closed on this topic, as some respondents believe, but that debate is healthy and can move the field to the next level. The criticisms about the measurement of parents' IQ, multiple comparisons, the linearity of the lead-IQ relationship, and the societal consequences of a few points of IQ loss appear weak in the face of an array of evidence that bears on these topics. However, criticisms about my emphasis on the need to control for a wide variety of potential confounders has validity. Ultimately, however, the case for the relationship of low blood lead to IQ loss seems to rest tenuously on data obtained from samples that included numerous subjects with moderate to severe levels of blood lead. (C) 2001 National Academy of Neuropsychology. Published by Elsevier Science Ltd.
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