Abstract
This study aims to validate the Korean version of the Child and Adolescent Trauma Screen 2 and to develop a shortened version of the scale. For this purpose, data were collected and analyzed from 356 pairs of children and their caregivers and 533 adolescents. The results indicated that the items were appropriate, and internal reliability of the sub-factors ranged from .88 to .97, demonstrating a good level of reliability. Confirmatory factor analysis confirmed that DSM-5 PTSD fits a 4-factor model, and ICD-11 Complex PTSD fits a 2-factor hierarchical model. Additionally, the cutoff scores were calculated using ROC curve analysis to confirm that K-CATS-2 discriminates well among PTSD clinical groups. Furthermore, correlational analyses with relevant scales demonstrated good concurrent validity. Finally, a brief version of 4 items(5, 7, 11, and 18) was proposed to enhance its utilization in clinical settings, and the internal reliability of the shortened version was good. The implications of the study findings and suggestions for future studies were discussed.
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