Richard Bromfield

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To investigate the impact of low-level lead exposure on children's behavior within a natural setting, we assessed the school performance of a sample of 141 elementary school children classified according to dentine lead level. Twenty-two children had “elevated” levels (≥20 parts per million), 71 had “midrange” levels (10.0–19.9 parts per million), and 48(More)
In this article we review information-processing studies applicable to the similar structure hypothesis. This hypothesis holds that when nonorganically impaired retarded and nonretarded persons are similar in general developmental level, they are also similar in the cognitive processes and concepts by which they reason. Results of this review were(More)
Labels implying deviance or handicap can have stigmatizing effects. However, developmental theory and research suggest that such label effects may depend on cognitive processes that only develop in later childhood—processes such as trait inference and the logical linkage of attributions, expectancies, and behavior prescriptions. To test this possibility, we(More)