Parenting children with developmental disabilities (DD) can be generally characterized by a considerable psychological burden. The effects on parental and familial psychological well-being and, consequently, on children's developmental outcomes should not be underestimated, especially in early childhood. The current review aims to advance our understanding of the key factors (e.g., formats, sample characteristics, research design) that characterize parent training interventions, and that could be related to their outcomes, to guide researchers and clinical practitioners to develop and provide efficient programs. Studies were identified via an Internet search from three electronic databases, following PRIMSA guidelines. Studies published until November 2021 were taken into account. The initial search yielded a total of 2475 studies. Among them, 101 studies were fully reviewed. Finally, ten of the studies, which met all the inclusion criteria, formed the basis for this review. Participants' characteristics, main features of the interventions (i.e., study design, structure, and contents), outcome variables and treatment efficacy were deeply examined and discussed. Key factors of parent training interventions with parents of children affected by DD are enlightened, to guide researchers and clinicians in the design and implementation of tailored specific programs, aimed to sustain parenting and foster children's developmental outcomes, from early stages of life.
Keywords: developmental disabilities; infancy; intervention; parent training; parenting.