title: Low lead and cadmium levels and childhood visual-perception development.
abstract: This study investigated possible relationships of lead and cadmium levels to childhood visual-perceptual development. Hair-metal concentrations of lead and cadmium were analyzed in 25 children who were having learning problems. They were also administered the Bender Visual-motor Gestalt Test. Lead and cadmium levels correlated significantly and negatively with age-deviations of Bender errors. A continuing reexamination of lead and cadmium levels is needed because levels previously thought harmless may be associated with decrements in childhood visual-perceptual development.
mesh_terms: D001538:Bender-Gestalt Test; D002105:Cadmium Poisoning / Q000523:psychology*; D002648:Child; D002657:Child Development / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D007855:Lead Poisoning / Q000523:psychology*; D007859:Learning Disabilities / Q000139:chemically induced / Q000523:psychology; D008297:Male; D014796:Visual Perception / Q000187:drug effects*