Koop, J., Holliday, D., Mathews, B. L., Namaste, J., Alt, R., & Biel, C. H. (2022). Efficacy of a peer‐based in‐home education program in improving social‐emotional outcomes of parents and children. Infant Mental Health Journal, 43(5), 783–796. Model(s): Home Instruction for Parents of Preschool Youngsters (HIPPY)® Does not pass screens Screening conclusion: Ineligible study design Study reviewed under: Handbook of Procedures and Standards, Version 2