Early communication and social-emotional skills play a critical role in children's development (Kaiser & Hester, 1994; Shonkoff & Phillips, 2000). Social-communication and emotional development are closely related and also influence subsequent academic achievement (Fujiki, Brinton, & Todd, 1996; Van Daal, Verhoeven, & van Balkom, 2007). Behavior problems often accompany language delays in preschool-aged children (Qi & Kaiser, 2004). Brinton and her colleagues found, for example, that children with language delays had a difficult time entering ongoing conversations and, even when they participated in a conversation, they talked and cooperated less compared with their typically developing peers (Brinton, Fujiki, Spencer, & Robinson, 1997). Difficulties such as these can reduce opportunities for children to engage in social interactions, which in turn can weaken their language and social competence (Robertson & Weismer, 1999). Children's communication skill not only lays the groundwork for their later social development but also influences their achievement in academic areas when they enter school (Dickinson & Tabors, 1991; Walker, Greenwood, Hart, & Carta, 1994). Communication difficulties are pervasive in young children who receive services under the Individuals With 426486T EC33110.