Article InformationAuthors: Polick, A. S.; Carr, J. E.; Hanney, N. M.Year: 2012Publication: Journal of applied behavior analysisVolume: 45Issue: 3Pages: 593-9DOI: 10.1901/jaba.2012.45-593 Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)Domains: CommunicationIntervention: Differential reinforcementReinforcement