Article InformationAuthors: Ingersoll, B., & Lalonde, K.Year: 2010Publication: Journal of Speech, Language and Hearing ResearchVolume: 53Issue: 4Pages: 1040DOI: 10.1044/1092-4388(2009/09-0043) Final Quality and Data Extraction DecisionsAge: Birth to 35.9 months (0-2.9 years)36-71.9 months (3-5.9 years)Domains: CommunicationPlaySocialIntervention: Naturalistic intervention