In 2020, a systematic review of randomized controlled trials (RCTs) evaluated the clinical effectiveness of psychological therapies for the management of adult chronic pain (excluding headaches). There is no evidence that behaviour therapy (BT) is effective for reducing this type of pain, however BT may be useful for improving a persons mood immediately after treatment. This improvement appears to be small, and is short term in duration. CBT may have a small positive short-term effect on pain immediately following treatment. CBT may also have a small effect on reducing disability and potential catastrophizing that may be associated with adult chronic pain. These benefits do not appear to last very long following the therapy. CBT may contribute towards improving the mood of an adult who experiences chronic pain, which could possibility be maintained for longer periods of time.