Metals and school learning: a review of investigative techniques.

A growing body of literature suggests a relationship between metals and a threatened health status among children, adolescents, and adults. Recently, several investigators have reported a direct link between exposure to metal and diminished affective, behavioral, and cognitive performance of school children. The purpose of the present study was to review and analyze methods and procedures used to understand the relationship between exposure to metals and cognitive, social, and motor functioning of school children.