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Child PTSD Symptom Scale (CPSS)

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Child PTSD Symptom Scale (CPSS)

(Foa, Johnson, Feeny, & Treadwell, 2001).

The CPSS is a 24-item self- or clinician-report measure assessing trauma symptoms in youths 8 to 18.

The CPSS can be used as a screening tool, a diagnostic tool (International Society for Traumatic Stress Studies, 2013), and to monitor symptom changes over time (Adler Nevo & Manassis, 2011). The first part of the CPSS maps onto DSM-IV criteria for PTSD. Each item is rated on a 4-point Likert scale to rate symptom severity ranging from zero (“Not at all”) to three (“5 or more times per week/almost always”). The second part of the measure focuses on functional impairment. Each item is rated from zero (“Absent”) to one (“Present”). This measure can be administered in 20 minutes by clinician and 10 minutes as a self-report measure. The CPSS can be scored manually with the first part yielding a PTSD symptom score between 0-51, and three subscale scores (i.e., re-experience, avoidance, and arousal). The first part of the CPSS demonstrates good internal consistency (α = .89), and adequate test-retest reliability of PTSD symptom severity scores over a period of one to two weeks (r = .63-.85). In addition, the CPSS demonstrates convergent validity (Foa et al., 2001) with the Child Post-Traumatic Stress Disorder Reaction Index (CPTSD–RI; Fredrick, Pynoos, & Nader, 1992) and divergent validity when compared to the DSRSC (Birleson et al., 1987) and Multidimensional Anxiety Symptom Scale (MASC; March, Parker, Sullivan, Stallings, & Conners, 1997) scores. The second part of the CPSS (functional impairment) demonstrates good internal consistency (α = .89), adequate test-retest reliability over a period of one to two weeks (r = .70) as well as a strong relationship to overall PTSD severity as compared to the CPTSD-RI (r = .42; Foa et al., 2001).

This measure can be obtained from (foa@mail.med.upenn.edu).

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