The present study was a multisite randomized clinical trial assessing the effects of adding a cognitive-behavioral intervention to positive behavior support (PBS). Fifty-four families who met the criteria of (a) having a child with a developmental disability, (b) whose child displayed serious challenging behavior (e.g., aggression, self-injury,…

There is growing evidence of an association between physical illness and problem behavior in children with developmental disabilities. Such behavior can compromise school performance. Therefore, the purpose of the present study was to evaluate, using a group design, the effectiveness of medical intervention alone (N = 11) versus behavioral plus…