“…If an intervention reduces the number of PTSD symptoms so that a child no longer meets the PTSD diagnosis, but the child remains significantly functionally impaired, it could be argued that that the treatment was not as effective as would initially appear. The recommendation that treatment studies include clinically meaningful outcomes (i.e., reduction in functional impairment) in addition to symptom reduction has been previously proposed by multiple researchers (Becker, Chorpita, & Daleiden, 2011;Hoagwood, Jensen, Petti, & Burns, 1996;Kazdin, 2006;Layne, 2011) but not consistently heeded. For example, a recent systematic review of evidence-based PTSD treatments for maltreated children with the goal of examining treatment effectiveness with a "broad range of psychopathological outcomes" (Leenarts, Diehle, Doreleijers, Jansma, & Lindauer, 2013, p. 270), did not address functional impairment.…”