Schema therapy for patients with borderline personality disorder: a single case series.

The effectiveness of schema therapy for patients with borderline personality disorder (BPD) developed by Young was investigated using a single case series trial of six patients who all had primarily a DSM-IV BPD diagnosis. The treatment approach comprised the core elements of schema therapy with an emphasis on schema mode work and limited re-parenting. An A-B direct replication series with follow-up assessments at 12 months was implemented. From baseline to follow-up improvement was large, as indicated by large effect sizes, and improvement was clinically meaningful for five of the six patients included. Three of the six patients did not any longer fulfill the criteria for BPD by the end of the treatment.