Article InformationAuthors: Koegel, R. L., Shirotova, L., & Koegel, L. K. Year: 2009Publication: Journal of autism and developmental disordersVolume: 39Issue: 2Pages: 1587-1592DOI: 10.1007/s10803-009-0765-9 Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)Domains: CommunicationIntervention: Prompting