Article InformationAuthors: Whalen, C., & Schreibman, L.Year: 2003Publication: Journal of Child Psychology and PsychiatryVolume: 44Issue: 3Pages: 456-468DOI: 10.1111/1469-7610.00135 Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)Domains: CommunicationJoint attentionSocialIntervention: ModelingPromptingReinforcement