Article InformationAuthors: McDuffie, A. S.; Lieberman, R. G.; Yoder, P. J.Year: 2012Publication: Autism : the international journal of research and practiceVolume: 16Issue: 4Pages: 398-405DOI: 10.1177/1362361309360983 Final Quality and Data Extraction DecisionsAge: Birth to 35.9 months (0-2.9 years)36-71.9 months (3-5.9 years)Domains: PlayIntervention: Augmentative and alternative communicationPicture Exchange Communication System (PECSĀ®)Naturalistic intervention