2.2. Participants
Participants were preschool-aged children from intervention classrooms in nine schools located in two ethnically diverse school districts in South Central Texas. Twenty-one teachers were randomly assigned to either the intervention (n = 13) or the business-as-usual condition (n = 8). Because the purpose of this study was to examine teacher-child interactions by attending to the content and amount of time spent in the shared-book reading activities and the relationship between these activities and vocabulary outcomes, only data from the intervention teachers and children were examined.