ABSTRACT
The advent of multiple transdiagnostic treatments in recent decades has advanced the field of clinical psychology while also raising questions for clinicians and patients about how to decide between treatments and how to best deliver a chosen treatment. The purpose of this paper is to review two prominent transdiagnostic treatments that target emotion dysregulation: dialectical behaviour therapy and the unified protocol for transdiagnostic treatment for emotional disorders. First, we review the theoretical underpinnings, research support and proposed mechanisms of action for these treatments. Next, we discuss patient and therapist variables that might indicate which treatment is more appropriate for a given patient and discuss decision-making guidelines to help make this determination with an emphasis on complex patients who may present with risk and/or clinical comorbidities. Finally, we discuss areas for future research that can help further ensure we work to match patients to the treatment that is most likely to benefit them.