What are some evidence-based limitations of CBT for certain personality disorders?

• A. CBT may be less effective alone for some personality disorders (e.g., certain presentations of BPD) and is often enhanced with DBT, schema therapy, or integrated approaches.
• B. CBT is always most effective for all personality disorders
• C. CBT has no limitations
• D. CBT is always superior to other therapies

Answer: (A)

CBT has strong evidence overall, but its limitations appear when it comes to certain personality disorders. For some presentations of borderline personality disorder, CBT used in isolation may not yield optimal outcomes. That’s why the best answer notes that CBT may be less effective on its own for some personality disorders and is often enhanced with approaches like dialectical behavior therapy (DBT), schema therapy, or other integrated methods.

DBT adds structured emotion regulation, distress tolerance, and mindfulness skills that directly target the heightened affectivity and impulsivity seen in many BPD presentations. Schema therapy expands CBT by addressing deep-seated, lifelong schemas and early relational patterns that underlie persistent personality pathology. Integrated or stepped-care approaches combine cognitive-behavioral techniques with relational, psychodynamic, or experiential elements to tackle both surface symptoms and core maladaptive patterns.

So the idea is not that CBT is useless for personality disorders, but that for some disorders (especially certain BPD presentations) and for enduring personality pathology, using CBT alone may be insufficient, and augmentation with these other modalities tends to improve outcomes. The other choices imply universal effectiveness or no limitations, which isn’t supported by evidence.