Article InformationAuthors: Matson, J. L., Sevin, J. A., Box, M. L., Francis, K. L., & Sevin, B. M.Year: 1993Publication: Journal of Applied Behavior AnalysisVolume: 26Issue: 3Pages: 389-398DOI: 10.1901/jaba.1993.26-389 Final Quality and Data Extraction DecisionsAge: 36-71.9 months (3-5.9 years)Domains: CommunicationSocialIntervention: Visual supports