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Randomized Controlled Trial (RCT) Group Intervention

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conducted a randomized controlled trial (RCT) research to examine the effectiveness of cognitive-behavioral therapy (CBT) group intervention to decrease PTSD symptoms and to improve psychosocial functioning and classroom behavior among immigrant Latino students. The participants are six-grade students who are exposure to school violence and have PTSD symptoms in two Los Angeles public middle schools. The students are randomly assigned to 10 session of cognitive-behavioral intervention for trauma in schools (CBITS) with two groups which are an early intervention group and a wait-list delayed intervention comparison group.
There are two strength of this intervention design. First, the clinicians followed the CBITS treatment manual through the

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