Proponents of the now half-dozen major psychotherapeutic approaches tend to claim the superiority of their different approaches—known widely by their acronyms: CBT for Cognitive Behavioral Therapy, DBT for Dialectic Behavioral Therapy, MBT for Mentalization-Based Therapy, TFP for Transference-Focused Psychotherapy, and so on. The data thus far support the utility of each method, but do not show clear-cut superiority of any one method. A large percentage of BPD patients eventually improve or even recover, but these favorable results appear to derive from a multiplicity of factors. These include the personality traits of both patient and therapist, the unpredictable life events over time, the socioeconomic and cultural background of the patient, and the placebo effect of simply being in treatment. These latter factors constitute the contextual model, which operates alongside the medical model, each playing a role in eventual outcome. The contextual model will be discussed extensively in a separate article.