This report presents a proposed study design that would examine the feasibility and potential benefits of investing time in the WGT PD system for infant and toddler caregivers. The focus of the proposed design is on contextual factors and processes that may influence the adoption, implementation, and potential sustainability of WGT in center-based classrooms and family childcare homes (FCCs), in both Early Head Start (EHS) and community-based settings. (author abstract)