Attention Deficit Hyperactivity Disorder (ADHD) is one of the most frequently diagnosed psychiatric disorders in children and adolescents. Clinically referred preschool children with ADHD are significantly impaired, are at-risk for poor school outcome, and are frequent users of the healthcare system. Behavior problems in preschool children with ADHD persist to school-age years resulting in considerable stress for the entire family and staggering socio-economic burden to schools and society at large.

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