Many children and adolescents with arthritis have pain that interferes with their daily activities, but we do not understand why some children with arthritis have more pain or pain that interferes more with their lives than others. Researchers have found that resilience, a person’s ability to recover from difficult times and events, may help to protect children from developing chronic pain. However, it is not known whether poor resilience is a risk factor for worse interference in daily life from JIA pain. In this application, I propose a study that would measure both resilience and pain interference over time to see whether low resilience is a risk factor for significant pain interference. If we find that poor resilience is a risk factor for high pain interference in JIA, we can study whether improving resilience reduces the impact of pain on the lives of children with arthritis.