Connolly, J., & Mallett, S. (2020). Changing children’s trajectories: results of the HIPPY Longitudinal Study. Brotherhood of St Laurence. Model(s): Home Instruction for Parents of Preschool Youngsters (HIPPY)® Does not pass screens Screening conclusion: Research about an evidence-based model conducted outside of the United States Study reviewed under: Handbook of Procedures and Standards, Version 2