Evaluating "mentalizing positive affect" as an intervention for enhancing positive affectivity in borderline personality disorder using a single-case multiple-baseline design.

Psychotherapy
Tine S D HarpøthErik Simonsen

Abstract

Evidence-based treatments for borderline personality disorder (BPD), including mentalization-based treatment (MBT), have not adequately examined changes in positive affect (PA) in the treatment of BPD. Therefore, we developed a new intervention, "mentalizing positive affect," and evaluated its effect on PA, negative affect, BPD severity, ego-resiliency, and quality of life during MBT treatment for BPD. In a single-case multiple-baseline design, 4 female BPD patients received 6 months of individual MBT, after which they were followed up for 2 months. Intensive repeated measurements data were subjected to hierarchical linear modeling to analyze whether the positive intervention was related to changes in self-reported outcome measures. Our results failed to support a co-occurring increase in the reporting of PA related to the "mentalizing positive affect" intervention. However, the slope of PA increased at a quicker rate after the end of treatment, perhaps indicating a delayed treatment effect. "Mentalizing positive affect" was related to a marginally significant decrease in the mean level of BPD severity compared with standard MBT. Moreover, focusing on PA in MBT seemed feasible for maintaining a good working alliance. Our findin...Continue Reading

Citations

Oct 13, 2020·Psychotherapy Research : Journal of the Society for Psychotherapy Research·E J FolmoE H Kvarstein

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