<imgsrc=”” border=”0″ align=”left” alt=”image”>The aim of this study was to compare the effectiveness of two treatment modalities for patients diagnosed with borderline personality disorder (BPD). A total of 100 psychiatric patients diagnosed with BPD participated in this study. Among them, 50 patients were outpatients who attended the Reason and Emotion (RIO) program, and the remaining 50 were inpatients who were treated on psychotherapeutic ward at the same hospital. All the participants filled out the following battery of tests when entering the program/psychotherapy ward and 3 months later: Rosenberg’s Self-Esteem Scale, Tennessee Self-Concept Scale (2nd ed), Barratt Impulsiveness Scale, The COPE Inventory, and the WHOQOL-BREF scale. The results showed significant positive effects of both treatment modalities on patients’ self-esteem, different domains of self-concept, impulsivity, and different domains of subjective quality of life. No significant changes were observed in terms of coping strategies. Thus, the results speak in favor of the outpatient RIO program, which is more cost-effective than the inpatient ward treatment.