“…Most children reach language proficiency in at least one language, but 15%-20% of 2-to 3-year-old children have significant language delays that are not associated with a genetic syndrome, hearing impairments, or a neurological or emotional disorder (Horwitz et al, 2003;Reilly et al, 2007). Although a marked increase in language skills occurs during the preschool years in the majority of primary language-delayed children (e.g., Dale, Price, Bishop, & Plomin, 2003;Rescorla, Roberts, & Dahlsgaard, 1997), these children still demonstrate reduced language proficiency and literacy skills compared to their typically developing peers (e.g., Paul, 1993).…”