In this policy memo, Ariel Kalil proposes that the U.S. Department of Health and Human Services’ Administration for Children and Families create a task force supporting the collection of evidence to develop more-effective parenting interventions and to promote improved child development in early years. This proposal, targeted at low-income families with young children, will collect evidence on successful parenting interventions for young children through rigorous experiments, and will develop new interventions that are lower-cost and better-matched to families’ needs. This proposal is chapter two of The Hamilton Project’s Policies to Address Poverty in America, and a segment in Promoting Early Childhood Development.