Group interpersonal psychotherapy (IPT-G) for borderline personality disorder: A randomized controlled study

Area of Science:

• Psychiatry
• Psychotherapy Research
• Clinical Psychology

Background:

• Borderline Personality Disorder (BPD) often requires multifaceted treatment approaches.
• Individual psychotherapy is a cornerstone of BPD treatment, but evidence suggests adjunctive therapies may enhance outcomes.
• Group therapy, specifically interpersonal psychotherapy, is being explored as a beneficial addition.

Purpose of the Study:

• To evaluate the efficacy of adding group interpersonal psychotherapy (IPT-G) to individual interpersonal psychotherapy for BPD (IPT-BPD-R).
• To compare outcomes of combined IPT-BPD-R and IPT-G versus IPT-BPD-R alone.
• To identify predictors of treatment response to add-on group therapy.

Main Methods:

• A 20-week randomized controlled study involving 46 BPD patients.
• Participants were assigned to either IPT-BPD-R plus IPT-G or IPT-BPD-R with a waitlist for IPT-G.
• Assessments included measures of BPD severity, aggression, social functioning, interpersonal problems, and social cognition.

Main Results:

• The combined therapy group showed significant improvements in core BPD symptoms, aggression, interpersonal functioning, and quality of life compared to the control group.
• Specific BPDSI items, aggression, social cognition (RMET), and aspects of quality of life and interpersonal problems improved significantly with add-on therapy.
• Lower impulsivity, reduced social inhibition, and better social cognition predicted greater benefits from IPT-G.

Conclusions:

• Add-on group interpersonal psychotherapy (IPT-G) to individual therapy (IPT-BPD-R) enhances treatment outcomes for individuals with borderline personality disorder.
• The combined approach leads to greater improvements in BPD symptomatology, social cognition, and interpersonal functioning.
• Personal characteristics such as impulsivity, social inhibition, and social cognition abilities are important factors influencing response to adjunctive group therapy.