The Child PTSD Symptom Scale (CPSS) is a child version of the Foa et al. (1997) Posttraumatic Diagnostic Scale (PTDS) for adults. This self-report measure assesses the frequency of all DSM-IV-defined PTSD symptoms and was also designed to assess PTSD diagnosis. The first 17 items measure PTSD symptomatology and yield a total Symptom Severity score. Seven additional items assess daily functioning and functional impairment.