Avicenna Journal of Neuropsychophysiology

en Comparison of the Effectiveness of Acceptance and Commitment-Based Therapy and Intensive Short-term Dynamic Psychotherapy on Perfectionism and Quality of Life in Patients with Obsessive Compulsive Disorder عمومى General پژوهشي Research Article Background and Objective: This research aimed to compare the effectiveness of acceptance and commitment-based therapy (ACT) and intensive short-term dynamic psychotherapy (ISTDP) on perfectionism and the quality of life of patients with obsessive-compulsive disorder. Materials and Methods: This semi-experimental research was performed with a pre-test, post-test, and follow-up design and a control group. The statistical population of the research included all the patients of Mehr Neurological and Psychiatric Hospital as well as Imam Reza and Khorramabad Health Centers in the second half of 2022-2023. In total,  42 participants were selected by the available sampling method and divided into three groups, namely ISTDP (n=14), ACT (n=13), and the control group (n=15). They answered the Perfectionism Inventory by Hill et al. (2004) and Quality of Life by Ware and Sherbourne (2000) in three stages. The intervention groups received scheduled intervention during eight sessions based on the treatment protocol, while the control group did not receive any training. The obtained data were analyzed using variance analysis with repeated measurements. Results: The results showed that there was a significant difference between the effects of the two methods of ACT and ISTDP on the maladaptive dimension of perfectionism (P=0.004) and the mental health dimension of quality of life (P=0.047). Conclusion: It was concluded that the ACT reduced the scores of the maladaptive aspect of perfectionism more and increased the scores of the mental health dimension of the quality of life, compared to the ISTDP. Therefore, it can be said that ACT is a more effective method for the reduction of maladaptive perfectionism and increase of the mental health dimension of quality of life in patients with obsessive-compulsive disorder compared to ISTDP.   ACT, ISTDP, OCD Perfectionism, Quality of Life 164 173 http://ajnpp.umsha.ac.ir/browse.php?a_code=A-10-879-1&slc_lang=en&sid=1 Maryam Ezzatpour mojabinasrin83@gmail.com 10031947532846007007 10031947532846007007 No Department of Psychology, Borujerd Branch, Islamic Azad University, Borujerd, Iran Zahra Tanah mojabinasrin83@gmail.com 10031947532846007008 10031947532846007008 Yes Assistant Professor, Department of Psychology, Khorram Abad Branch, Islamic Azad University, Khorram Abad, Iran Kourosh Amraei mojabinasrin83@gmail.com 10031947532846007009 10031947532846007009 No Associate Professor of Psychology Department, Faculty of Literature and Humanities, University of Lorestan, Khorram Abad, Iran Kourosh Goodarzi mojabinasrin83@gmail.com 10031947532846007010 10031947532846007010 No Assistant Professor, Department of Psychology, Borujerd Branch, Islamic Azad University, Borujerd, Iran