Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in…

Due to an increasing number of children under the age of three attending early childhood education and care (ECEC), there is an increasing need for high-quality care settings. In addition to primary caregivers, ECEC teachers are important socializers of children's emotional development and may become children's attachment figures. Early preventive…

The development of social-emotional skills is crucial in early childhood. Behavior problems in early childhood are risk factors for difficulties throughout childhood and adolescence and beyond. Considering the importance of developing social and emotional skills during early childhood, this study introduced the Papilio-3to6 program into everyday…