Working Alliance Instability in the Inpatient Treatment of Borderline Personality Disorder

Borderline personality disorder (BPD) is characterized by a pathognomonic instability of interpersonal relationships. Therefore, a good working alliance in the treatment of BPD may go beyond qualitative aspects like agreement on goals and mutual trust, and in particular depend on a balancing of instability. Yet, little is known about working alliance dynamics in the treatment of BPD. Using daily ratings of the Therapy Process Questionnaire, we retrospectively investigated assessments of the stability of the therapeutic alliance during inpatient treatment in 51 patients with BPD and 66 patients with major depressive disorder. Regression analyses were used to investigate whether working alliance was more unstable in patients with BPD and how it was associated to outcome. The working alliance was found to be significantly more unstable in patients with BPD. Yet, a high dynamic complexity of the working alliance was found to be linked to better outcomes in BPD, possibly hinting at the importance of rupture and repair.