IRCT2013112815577N1 IRCT 2014-04-06 ..... The Effectiveness of Acceptance and Commitment Therapy on Chronic Pain of Children CHACT The Clinical Trial of Acceptance and Commitment Therapy (CHACT) on the Psychological Flexibility in Pain, Function, Quality of life, Internalizing and Externalizing Symptoms of 7 to 12 years - old Children with Chronic Pain 2012-06-19 anticipated 20 Complete https://irct.ir/trial/14804 interventional Randomization: Not randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Chronic pain. Intervention 1: Experimental group: The designed protocol of CHACT was individually implemented for 8 sessions (each session is about one hour) on them. For protocol design, on one hand, the resources associated with acceptance and commitment therapy and psychological therapy for children, and the other hand, the initial version of acceptance and commitment therapy on children ( To consult with Association for Contextual Behavioral Science (ACBS)), were used. The basic components of this protocol include acceptance, cognitive defusion, valuing, behavioral commitment, etc. The objective of the acceptance is that patients are encouraged to welcome unsolicited thoughts and feelings. Thus, there is a way to change avoiding from painful situations. The goal of cognitive defusion is reduction in the true sense of inner experiences. That, thoughts should be considered only as thought and reduced their impact on behavior. In this treatment, the values are considered as elements of life and they stimulate the patients to engage in some specific activity. The patients learn to determine their value orientations in different aspects ( Eg, family, spirituality ) and act in accordance with them. The behavioral commitments lead to realize the values. they will continue until in person be made the great models of flexible and effective behaviors that are associated with the values. It should be noted that at the end of each session, in accordance with the content of the protocol, a 20-minute session is considered for children`s parent. Intervention 2: Control group: They received conventional medical treatment in the hospitals.