Provides clinicians with the foundational knowledge to adapt their practices and provide trauma-informed care to children with IDD. This series presents on children with intellectual and developmental disabilities (IDD) and their experiences of traumatic events at a rate that is at least equal to their typically developing peers and are at increased risk for some types of traumatic events, with serious negative impacts. It is estimated that, in the US, one in six children has a developmental disorder, including intellectual disability, autism, and other genetic and brain-based conditions.