An item response theory analysis of the PTSD checklist for DSM-5: Implications for DSM-5 and ICD-11
Abstract The PTSD Checklist (PCL) is a widely used, extensively validated questionnaire for
posttraumatic stress disorder (PTSD). The PCL was revised for Diagnostic and Statistical
Manual of Mental Disorders, 5th Edition (DSM-5; Friedman, 2013), and the updated version,
the PCL-5, has continued the strong psychometric performance of the original version. To
further explore the PCL-5's psychometric properties, we used item response theory (IRT) to
examine item difficulty and discrimination parameters in separate samples of trauma …
posttraumatic stress disorder (PTSD). The PCL was revised for Diagnostic and Statistical
Manual of Mental Disorders, 5th Edition (DSM-5; Friedman, 2013), and the updated version,
the PCL-5, has continued the strong psychometric performance of the original version. To
further explore the PCL-5's psychometric properties, we used item response theory (IRT) to
examine item difficulty and discrimination parameters in separate samples of trauma …
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