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Thirteen children (ages 5.6 to 11.2 years) with autism and symptoms of attention-deficit hyperactivity disorder (ADHD) participated in a double-blind, placebo-controlled crossover study of methylphenidate (0.3 and 0.6 mg/kg per dose). Eight subjects responded positively, based upon a minimum 50% decrease on the Conners Hyperactivity Index. Ratings of stereotypy and inappropriate speech, which are often associated with autistic core features, also decreased. However, no changes were found on the Child Autism Rating Scale, a global assessment of autistic symptomotology. Significant adverse side effects occurred in some children including social withdrawal and irritability, especially at the 0.6 mg/kg dose. Results suggest that methylphenidate can be efficacious for children with autism and ADHD symptoms. However, this group of children seems to be particularly susceptible to adverse side effects.

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A cross sectional survey was performed to obtain the characteristics of specialized inpatient psychiatry units exclusively serving children with autism and other developmental disorders in the United States. Identified units were surveyed on basic demographic characteristics, clinical challenges and therapeutic modalities. Average length of stay was 42.3 days, children with autism spectrum disorders constituted the majority of the inpatient population (62.5-87.5%), and obtaining adequate post-discharge services was identified as the greatest challenge. Health policy implications and future research directions are suggested.

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Using a combination of an alternating treatment and double-blind placebo-controlled drug design, the independent and combined effects of two behavioral interventions and two doses of methylphenidate (MPH) in 3 children with Attention Deficit Hyperactivity Disorder (ADHD) and mental retardation (MR) were assessed. In this single subject design, 2 of the 3 subjects responded positively to medication as measured by increased on-task behavior. The first behavioral intervention, a token economy for on-task behavior, was ineffective for increasing either on-task behavior or work accuracy when combined with placebo. However, improvement in work accuracy was realized with implementation of a second behavioral intervention that specifically targeted accuracy independent of drug conditions. The current findings highlight both the positive effects and limitations of the two commonly used treatment modalities for ADHD. Future studies should continue to extend this area of investigative efforts to produce more data-based knowledge as to the appropriate doses of treatment, both pharmacological and behavioral, with children with both ADHD and mental retardation.