Child and Adolescent Trauma Screen

The Children and Adolescents Trauma Screen (CATS) looks at potentially traumatic events and symptoms of PTSD. It is directly based on the criteria for PTSD for children and adolescents from the DSM-5.

Total number of questions


Administration method


Standardized cadence

Every week

Age range




Scoring and interpretation

Answers are scored on a 4-point Likert scale from 0 to 3 with 0 for "Never" to 3 for "All the time." Scores are summed and total scores range from 0 to 18. Higher scores are associated with higher levels of PTSD symptoms. A score of 4 or greater is considered clinically significant.

Reliability and validity

The validation of the CATS showed good psychometric properties and has proven good to excellent internal consistency of the symptom scales with α ranging between .88 - .94 for the different versions.

Additional information

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