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Marcus, David K.; Fulton, Jessica J.; Clarke, Erin J. – Journal of Clinical Child and Adolescent Psychology, 2010
This meta-analysis examined the association between conduct problems and lead exposure. Nineteen studies on 8,561 children and adolescents were included. The average "r" across all 19 studies was 0.19 (p less than 0.001), which is considered a medium effect size. Studies that assessed lead exposure using hair element analysis yielded…
Descriptors: Poisoning, Effect Size, Meta Analysis, Children