Behavioural and Developmental Interventions for Autism Spectrum Disorder: A Clinical Systematic Review

Background: Much controversy exists regarding the clinical efficacy of behavioural and developmental interventions for improving the core symptoms of autism spectrum disorders (ASD). We conducted a systematic review to summarize the evidence on the effectiveness of behavioural and developmental interventions for ASD. Methods and Findings: Comprehensive searches were conducted in 22 electronic databases through May 2007. Further information was obtained through hand searching journals, searching reference lists, databases of theses and dissertations, and contacting experts in the field. Experimental and observational analytic studies were included if they were written in English and reported the efficacy of any behavioural or developmental intervention for individuals with ASD. Two independent reviewers made the final study selection, extracted data, and reached consensus on study quality. Results were summarized descriptively and, where possible, meta-analyses of the study results were conducted. One-hundred-and-one studies at predominantly high risk of bias that reported inconsistent results across various interventions were included in the review. Meta-analyses of three controlled clinical trials showed that Lovaas treatment was superior to special education on measures of adaptive behaviour, communication and interaction, comprehensive language, daily living skills, expressive language, overall intellectual functioning and socialization. High-intensity Lovaas was superior to low-intensity Lovaas on measures of intellectual functioning in two retrospective cohort studies. Pooling the results of two randomized controlle

Who should pay for intensive behavioural intervention in autism? A parent's view

The definitive version is available at www.blackwell-synergy.com Article first published online: 14 SEP 2004The evidence that early intensive behavioural intervention (IBI) is effective for young children with autism has persuaded parents worldwide to finance and advocate for IBI. Intensive behavioural intervention uses applied behavioural analysis to address the deficits of autism with an individualized and systematic approach. Communication, social, cognitive and adaptive gains are seen in the majority of children; a sizeable minority can catch up to near normal functioning, under ideal conditions. However there is not universal acceptance amongst professionals that IBI is the most proven intervention. What level of evidence is required for Australian states to provide adequate public funds for IBI