Current literature on effects of childhood lead poisoning and high blood lead level on psychological test performance was reviewed. A pathognomic configuration of mental ability test scores is described. A sample of 18 moderately to severely lead poisoned children was found to have a significantly higher frequency of this score configuration than either a comparison sample or the Black subsample of the original WISC-R standardization group. Implications for clinical practice and research are discussed.
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Frank J. Dyer (1993) studied this question.
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