Pretend play is an important, universal activity of early childhood, but research to date contains multiple inconsistencies in definitions and measurement of pretend play. To begin to resolve this issue, we conducted a first study of the multiple different behaviors of pretend play in the preschool years (3-5 years), and investigated their…

Certain social context features (e.g., maternal presence) are known to increase young children's exploration, a key process by which they learn. Yet limited research investigates the role of social context, especially peer presence, in exploration across development. We investigate whether the effect of peer presence on exploration is mediated by…

Twenty-nine years ago Minnesota Longitudinal Study of Parents and Children (MLSPC) was launched at the Institute of Child Development, University of Minnesota. It was one of the first prospective longitudinal studies of how parent-infant attachment develops, how it changes over time, and how the quality of attachment in infancy influences…

Empirical research on the role of school recess is reviewed. Effects of child-level and school-level variables on recess behavior and the impact of recess on classroom behavior and social and cognitive competence are discussed. It is concluded that recess has important educational and developmental implications. (SLD)