We narrowed this broad definition by including only those developmental disabilities associated with mental retardation or other cognitive disabilities and children with a combination of intellectual and physical impairments. That is, we excluded studies in which the children had physical disabilities and chronic illnesses that are not associated with cognitive disabilities. Thus, we excluded a group of studies focused on interventions for parents of children with ADHD and another of children with conduct disorders. Search terms for all databases included combinations of the terms disability, developmental disability, handicap, autism, mental retardation, cerebral palsy, traumatic brain injury and spina bifida with treatment, and intervention, depression, or distress with parents, mothers, fathers, and families.