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Abstract
Background: Little is known about the “active ingredients” of psychological therapy for Borderline Personality Disorder (BPD) despite a growing evidence base documenting its clinical effectiveness. This information can be used by clinicians to inform service planning and care pathways.
Aims: The aim of this study was to review published empirical research investigating the potential mechanisms underlying therapeutic change in Dialectical Behaviour Therapy (DBT) and Cognitive Behaviour Therapy (CBT) for BPD.
Method: A thorough search of the PsychInfo, CINAHL Plus, PubMed, MEDLINE and EMBASE databases revealed research into potential mechanisms of change.
Results: A total of 52 abstracts were reviewed. After a full text screen of the most relevant studies, 14 met inclusion criteria. Twelve examined DBT and two CBT. Mechanisms of change identified broadly fell into three categories: emotion regulation/self-control, skills use and therapeutic alliance/investment in treatment. Outcomes measured included general mental health diagnoses (e.g. anxiety, depression) and BPD-specific symptoms (e.g. self-harm/suicidality, impulsivity, substance misuse, anger).
Conclusion: Further empirically robust research is required to test hypotheses about the influence of the proposed mechanisms on therapeutic change in psychological therapies for BPD.
Declaration of interest
Susie Rudge and Peter Fonagy have no conflicts of interest to declare. Janet Feigenbaum is an international senior trainer in DBT with British Isles DBT, and Chairman of the Board of Accreditation for the Society for DBT UK.