Child and Family Traumatic Stress Intervention (CFTSI) – This is a brief early intervention and secondary prevention model, designed to prevent the development of chronic posttraumatic stress disorder (PTSD), for children aged 7–18 years who have recently experienced a potentially traumatic event. The program is rated Promising. Compared with the comparison group, the intervention group was statistically significantly less likely to have a PTSD diagnosis or receive a partial/full PTSD diagnosis; they also showed a lower severity of PTSD symptoms.