Over the past two years, the Fund has led a funding partnership to build support among child health researchers for a new process of determining whether adequate evidence exists to make recommendations for the content of preventive care. The current "gold standard" requires evidence from randomized controlled trials; however, this does not make use of the wide variety of available evidence, leaving practitioners without authoritative guidance for much of what they do during well-child care visits. Researchers have made significant progress in reaching agreement on the need to create and apply new standards and on the key concepts underlying them. This project will extend that work by testing a new decision-making process to analyze results from two successful, developmentally focused intervention programs and develop recommendations for practice based on them.