"Engaging young children: Lessons from research about quality in early childhood education and care" is a new OECD publication. It addresses different dimensions of quality in early childhood education and care (ECEC). As stated here: "It draws lessons from a cross-national literature review and meta-analysis of the relationship between early childhood education and care structure (e.g. child-staff ratios, staff training and qualifications), process quality (i.e. the quality of staff-child interactions and developmental activities), and links to child development and learning."
One of the background studies is a literature review authored by ISOTIS researcher Pauline Slot (University of Utrecht). This review examines how structural and process aspects of ECEC quality are interrelated in the provisions of ECEC for children in the 0-5 age range, including centre- and family-based day care.