Comparing Single-Session Therapies for Chronic Pain

Psychological therapies have been found to improve pain and functioning among individuals with chronic pain. Even a single-session of some of these therapies have been found to reduce pain. There are several competing psychological models and therapies for chronic pain that have yet to be compared in a single-session format: Cognitive Behavioral Therapy (CBT), Pain Reprocessing Therapy (PRT), and Emotion Awareness and Expression therapy (EAET). CBT is the most common behavioral intervention for individuals with chronic pain. CBT assists individuals in modulating thoughts and behaviors in order to better manage their pain. However, two newer behavioral treatments for chronic pain, PRT and EAET, postulate that chronic pain can be eliminated, rather than just managed. Both PRT and EAET emphasize that fear underpins pain generation in the nervous system. PRT suggests that fear of injury or further pain maintains chronic pain. EAET suggests that fear of emotional experiences and life stressors maintain chronic pain. These two new therapies, PRT and EAET, have yet to be compared. Individuals with chronic musculoskeletal pain will be randomized to receive either single-session of Cognitive Behavioral Therapy, Pain Reprocessing Therapy, Emotion Awareness and Expression Therapy, or a no-treatment control condition. Participants' pain and mood will be assessed at baseline, pre-intervention, post-intervention, and at two follow-up periods: 1 week and 4 weeks. The purpose of the proposed study is twofold: 1) to compare these three competing models of chronic pain treatment in a single-session, and 2) to investigate what potential mediators of change may be underpinning changes in pain for each treatment. The investigators therefore hypothesize that all 3 treatment types will reduce pain severity and improve functioning; the investigators do not have clear evidence to suggest that one therapy may outperform the others. The secondary hypothesis is that treatment-specific mediators will be more salient in each of the given treatments. The investigators hope to learn what kind of model is most effective for individuals with chronic pain, and whether a single-session of a given intervention can enact meaningful change in pain severity and functioning.