We evaluated the long-term effects of a supplemental, small-group kindergarten vocabulary intervention in fall and spring of first grade and winter of second grade. Participants included students from two studies, an initial efficacy study and a subsequent replication study, identified as at risk for language and learning difficulties, who were…

The purpose of this study was to evaluate effectiveness of rich and basic instruction to incidental exposure of target words with first-grade students within the context of repeated shared storybook reading. Participants were 224 first-grade students, randomly assigned to a condition by classroom, from three elementary schools that serve large…

Vocabulary knowledge at school entry is a robust predictor of later reading achievement. Many children begin formal reading instruction at a significant disadvantage due to low levels of vocabulary. Until recently, relatively few research studies examined the efficacy of vocabulary interventions for children in the early primary grades (e.g.,…