Article InformationAuthors: Williams, G., Pérez‐González, L. A., & Vogt, K. Year: 2003Publication: Journal of Applied Behavior AnalysisVolume: 36Issue: 3Pages: 285-296DOI: 10.1901/jaba.2003.36-285 Final Quality and Data Extraction DecisionsAge: Birth to 35.9 months (0-2.9 years)36-71.9 months (3-5.9 years)6-11.9 yearsDomains: CommunicationIntervention: ModelingPromptingReinforcement