Mandana Siroos - Department of Psychology, Sari Branch, Islamic Azad University, sari, Iran
Bahram Mirzaian - Department of Psychology, Sari Branch, Islamic Azad University, sari, Iran
Ramazan Hasanzadeh - Department of Psychology, Sari Branch, Islamic Azad University, sari, Iran

Introduction: Borderline personality disorder affects many cognitive, behavioral, and even emotional domains of individuals. This study aimed to evaluate the effectiveness of functional analytical therapy on controlling, expressing, and internalizing anger in patients with a borderline personality disorder.Methods: The research method was a quasi-experimental pre-test-post-test with experimental and control groups. The statistical population of this study included all ۴۳ women referred to Asal Psychological Clinic in Karaj city in ۲۰۲۰. Out of ۳۳ patients with moderate borderline personality disorder, ۲۴ were selected by simple random sampling method and were randomly assigned to two groups of ۱۲ (experimental and control groups). The functional analytical psychotherapy package of Tsai, Kohlenberg, Kanter & Waltz (۲۰۱۰) was performed on the experimental group in ۱۰ sessions of ۴۵ minutes. For experimental and control groups in pre-test and post-test Anger Questionnaire of Spielberg (۱۹۸۸) was used. Data were analyzed using analysis of covariance mixed with SPSS۱۸ software.Results: The results showed that functional analytical therapy has a significant effect on improving controlling, expressing, and internalizing anger in patients with borderline personality disorder (Pvalue≤۰.۰۰۱).Conclusions: These results emphasize the level of performance of functional analytical psychotherapy in different areas of cognitive, behavioral, and emotional in the treatment of people with a borderline personality disorder.Keywords: Functional therapy, Anger, Borderline personality disorder.Introduction: Borderline personality disorder affects many cognitive, behavioral, and even emotional domains of individuals. This study aimed to evaluate the effectiveness of functional analytical therapy on controlling, expressing, and internalizing anger in patients with a borderline personality disorder. Methods: The research method was a quasi-experimental pre-test-post-test with experimental and control groups. The statistical population of this study included all ۴۳ women referred to Asal Psychological Clinic in Karaj city in ۲۰۲۰. Out of ۳۳ patients with moderate borderline personality disorder, ۲۴ were selected by simple random sampling method and were randomly assigned to two groups of ۱۲ (experimental and control groups). The functional analytical psychotherapy package of Tsai, Kohlenberg, Kanter & Waltz (۲۰۱۰) was performed on the experimental group in ۱۰ sessions of ۴۵ minutes. For experimental and control groups in pre-test and post-test Anger Questionnaire of Spielberg (۱۹۸۸) was used. Data were analyzed using analysis of covariance mixed with SPSS۱۸ software. Results: The results showed that functional analytical therapy has a significant effect on improving controlling, expressing, and internalizing anger in patients with borderline personality disorder (Pvalue≤۰.۰۰۱). Conclusions: These results emphasize the level of performance of functional analytical psychotherapy in different areas of cognitive, behavioral, and emotional in the treatment of people with a borderline personality disorder. Keywords: Functional therapy, Anger, Borderline personality disorder.

Borderline personality disorder, Functional therapy