“…Greater efforts are needed to identify "process variables" or mediators that could be used to refine CBT and improve outcomes. 56,50,54 A large number of psychological variables have been identified as potential CBT process variables, including pain beliefs and perceived control over pain, 19,20,50 social support, 42,43 coping, 19,20 self-efficacy, 50 helplessness, [4][5][6] affective distress, and catastrophizing. 4,6,45,46,50,52 CBT-based treatments have typically taken a broad focus on processes for change and incorporated diverse packages of methods.…”