Peer interaction offers critical learning opportunities for preschool students, yet exposure to peers of different skill levels varies within and across classrooms. We explore two ways peers may affect learning: differences in who children play with in a classroom and differences in student composition across classrooms. We find that playing with…

We examined associations between preschoolers' levels and growth rates of emergent writing skills and their later reading abilities, including whether being bilingual altered such associations. This study involved 243 preschoolers in 95 early childhood classrooms, who were measured on emergent writing skills across four time points and later word…

This study examined the effects of training involving spatial versus nonspatial representations of numerical magnitude for promoting arithmetic fluency. The key goal was to advance theoretical understanding of the relation between spatial and math learning, while simultaneously laying the groundwork for the development of future educational…

This secondary analysis of data from a randomized control trial of an early mathematics intervention, ROOTS, explored whether patterns of intervention response were best categorized by the typical response/non-response binary or a more complex framework with additional response profiles. Participants included kindergarten students at risk for…