 Emotional disorders, encompassing a range of anxiety and depressive disorders, are the most prevalent and comorbid psychiatric disorders in adolescence. They are chronic, impairing, costly, and share overarching commonalities. Unfortunately, evidence-based therapies EBTs exist for only single disorders or domains e.g., depression, are rarely adopted by community mental health center CMHC clinicians, and effect sizes are modest 40-50 of youth are treatment non-responders. Thus, methods for improving outcomes for these youth, particularly in CMHCs are needed. This study tests the effectiveness of two novel interventions to address this need. The first intervention is a transdiagnostic treatment the Unified Protocol for the Treatment of Emotional Disorders in Adolescents, UP-A, a promising new approach that uses a small number of common strategies to treat a broad range of emotional disorders. Transdiagnostic models align with NIHs initiative to advance the understanding and treatment of psychopathology using the Research Domain Criteria RDoC. Importantly, this treatment approach is expected to improve client outcomes and have quicker uptake by CMHC clinicians because: 