Baker, A. J. L., Piotrkowski, C. S., & Brooks-Gunn, J. (1999). The Home Instruction Program for Preschool Youngsters (HIPPY). Future of Children, 9(1), 116–133 Model(s): Home Instruction for Parents of Preschool Youngsters (HIPPY)® Not applicable (NA) - implementation study Study reviewed under: Handbook of Procedures and Standards, Version 1