Article InformationAuthors: Tsiouri, I., & Greer, R. D.Year: 2007Publication: Journal of Early and Intensive Behavior InterventionVolume: 4Issue: 4Pages: 629-647 Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)Domains: CommunicationMotorIntervention: Reinforcement