PTSD Reaction Index for DSM-5 is a self-report questionnaire to screen for exposure to traumatic events and assess PTSD symptoms in school-age children and adolescents. The scale assesses the frequency of occurrence of PTSD symptoms during the past month (rated from 0 = none of the time to 4 = most of the time). The items map directly onto DSM-5 intrusion,avoidance,and arousal criteria,while two additional items assess associated features (fear of recurrence and trauma-related guilt). Scoring algorithms permit tabulation of UCLA PTSD-RI total score,and B,C,and D subscale scores.The Child/Adolescent Self-Report,the Parent/Caregiver Report,and the Age 6 and Younger version are available in several languages,including English,Spanish,Japanese,and Chinese.