Sibling involvement in interventions for children with a disability: a systematic review

Purpose To conduct a systematic review of the involvement of siblings of individuals with a disability in therapeutic interventions to explore (a) sibling roles, (b) reported outcomes related to participant skills, interactions, or relationships, and (c) participant experiences. Methods A search of popular databases and grey literature was completed identifying studies published in English from 1999-2020. In total, 14,815 citations were extracted. Following a review of titles and abstracts, 31 studies met the inclusion criteria and were assessed for study quality. Results The most common role assigned to siblings was that of a trained playmate (n = 11), followed by an untrained playmate (n = 5). Overall, the interventions reported positive outcomes, although sample sizes were small and variability in outcomes was high. None of the studies included adult participants and most (n = 28, 90.32%) included participants who had a diagnosis of Autism Spectrum Disorder (ASD). Over half of the studies reported participant experiences of the intervention, with most reporting positive experiences. Conclusions Notwithstanding the reported positive outcomes of the interventions in this review, further research is needed to better understand the specific impact of involving siblings in interventions, as is research with adult participants and participants with diagnoses other than ASD.