Article InformationAuthors: Greenberg, Alissa L.; Tomaino, Melaura Andree Erickson; Charlop, Marjorie H.Year: 2012Publication: Journal of Developmental and Physical DisabilitiesVolume: 24Issue: 6Pages: 539-558DOI: 10.1007/s10882-012-9288-y Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)6-11.9 yearsDomains: CommunicationIntervention: Augmentative and alternative communicationPicture Exchange Communication System (PECS®)