Psychometric evaluation confirms the PTSD Checklist is a valid tool for assessing PTSD symptoms in clinical samples in Norway, suggesting its reliable use in practice.
Background: The Post-Traumatic Stress Disorder (PTSD) Checklist for DSM–5 (PCL-5) is one of the most frequently applied self-report measures of PTSD symptoms. Yet, there is a need for more knowledge of the instruments' psychometric performance in clinical samples. Furthermore, the Norwegian version of the PCL-5 has not yet been validated.
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Lassen et al. (2025) studied this question.
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