While the study includes other types of information about children (e.g., descriptions of their language development and social-emotional competencies) and their families (e.g., descriptions of their daily lives and parenting practices), as well as the features of their early education and care settings (e.g., reports about the physical environment and adult-child interactions), this brief focuses on the technicalities and findings of the household survey. For more information about the overall study design, please see Brief 1. (author abstract)