The authors thank the families who participated in this research. We also express our gratitude to Bill Frea and to the students, Deanna Gerner and Lisa Howe, who assisted with the data collection and reliability measures. Finally, we greatly appreciate the feedback provided by Dr. George Singer and Dr. Mike Gerber for their extensive feedback on earlier drafts of this study.

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The Nova Scotia early intensive behavior intervention model -NS EIBI ( Bryson et al., 2007 ) for children with autistic spectrum disorders was designed to be feasible and sustainable in community settings. It combines parent training and naturalistic one-to-one behavior intervention employing Pivotal Response Treatment - PRT (R. Koegel & Koegel, 2006 ). We followed 45 children (33 males, mean baseline age  =  50 months) for 12months. Mean gains of 14.9 and 19.5 months were observed on expressive and receptive language measures, respectively, for children with an IQ of 50 or more at baseline versus 6.1 and 8.4 months for children with IQs less than 50. Behavior problems decreased significantly over the 1-year treatment for both groups, but autism symptoms decreased only for those with an IQ of 50 or more.

The school playground provides an ideal opportunity for social inclusion; however, children with autism spectrum disorder (ASD) often struggle to engage in appropriate social interactions in this unstructured environment. Thus, they may spend recess time alone. The FRIEND Playground Program is a structured, play-based intervention aimed at improving social interactions of children with ASD and other social challenges during recess. The current research study employed a multiple baseline across participant design to systematically evaluate whether this intervention yields increased social engagement and initiations with peers during recess. Seven participants with ASD or other social challenges received 20 min of direct intervention from trained playground facilitators during school recess each day. Results suggest that the FRIEND Playground Program produced meaningful increases in social engagement and social initiations from baseline among participants with ASD and other social challenges.