Children with ADHD, autism and other comorbid neurodevelopmental diagnoses who had well-controlled ADHD medication use for 1 year had improved cognitive test scores and ADHD symptoms, according to a Journal of Psychiatric Research study.“Numerous studies have documented efficacy of ADHD medication on core symptoms in the short term, but effects on cognitive development and long-term outcome are less well known,” Mats Johnson, MD, PhD, of University of Gothenburg’s Gillberg Neuropsychiatry Center in Sweden, and colleagues wrote. “The assessment of the role of ADHD medication for long-term outcome is difficult since adherence to the medication is often brief and inconsistent.” 
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