So much more is known now than a generation ago about how and when brain architecture is built and how deeply it is influenced by early experiences. We know for certain now that the way adult caregivers, parents in particular, interact with children during the first 5 years can actually shape their brain architecture for life--for better and for worse. But is this information about early, rapid brain growth--and how it is influenced by the quality of caregiving young children receive--reaching the people who need it most? Any effort to nurture and support young children, and to set them up for success in the long term, will be strengthened by helping their parents put this valuable brain science into action. That's why "ZERO TO THREE," with the support and collaboration of Vroom/The Bezos Family Foundation (BFF), undertook a comprehensive research effort to go directly to parents of young children to gain a clear and in-depth understanding about the challenges they face, the help they seek, and how satisfied they are with the support and information they receive.