Article InformationAuthors: Kaale, A.; Smith, L.; Sponheim, E.Year: 2012Publication: Journal of child psychology and psychiatry, and allied disciplinesVolume: 53Issue: 1Pages: 97-105DOI: 10.1111/j.1469-7610.2011.02450.x Final Quality and Data Extraction DecisionsAge: Birth to 35.9 months (0-2.9 years)36-71.9 months (3-5.9 years)Domains: Joint attentionPlayIntervention: Naturalistic interventionJoint Attention, Symbolic Play, Engagement, and Regulation (JASPER)