This study examined the effects of teaching 3 older siblings to use two milieu teaching procedures, modeling and mand modeling, with their younger siblings who exhibited language delays. A single-subject, multiple baseline design across subjects was used to determine the effects of the intervention on the behavior of the siblings and the target children.
Results indicated that siblings were able to apply milieu teaching techniques while playing with the target children. Siblings' responsiveness to the target children's verbal initiations also increased. The target children learned to use their targeted utterances in response to teaching attempts by their siblings and used the target spontaneously. Additionally, the interactions between the children became more positive and balanced during the intervention. Generally, all the siblings and target children maintained the changes in their behavior. Two of the three dyads generalized the behavioral changes to a snack setting. Implications for future investigations of sibling-implemented language intervention are discussed.
Family-based communication interventions with young children who have developmental disabilities have been the focus of a number of investigations in recent years (see Hemmeter &c Kaiser, 1994; Tannock & Girolametto, 1992). When family members are taught strategies to support the communicative behavior of a young child with developmental disabilities, both the child and the family member may benefit. Family-based communication intervention has typically included a young child with a disability and the child's mother; occasionally, fathers and significant others have been involved. No previous studies have focused on siblings as communi-Address: Terry B. Hancock, Downloaded from cation interventionists, and only a few studies have examined the role of siblings in any family-based intervention.Studies involving siblings in interventions have shown that siblings can learn to use specific teaching strategies or to interact in new ways with their brother or sister with a disability (Cash &c Evans, 1975; Colletti &c Harris