fa اثربخشی رفتاردرمانی دیالکتیکی به شیوه گروهی در بهبود افسردگی بیماران مبتلا به سرطان General پژوهشي Research Article <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><strong>Background and Aim: </strong>Proportional to the etiology of depression among cancer patients, various treatment methods are known one of which is dialectical behavior therapy. This study investigated the effectiveness of group dialectical behavior therapy on decreasing depression level of patients with cancer.<br> <strong>Materials and Methods:</strong> In this quasi-experimental study with pretest, posttest, and control group, 26 of cancer patients who referred to the chemotherapy centers in Shiraz in 2012 were selected through available sampling method and randomly divided into case and control groups. The case group participated in 16 ninety-minute sessions of dialectical behavior therapy, while the control group did not receive any treatment. The data collection tool was Beck Depression Inventory (BDI-II) whose reliability was determined 0.92 according to Chronbach&#39;s alpha. The data was analyzed in SPSS (version 18) using paired t-test and covariance analysis at the significant level P=0.05.<br> <strong>Results</strong>: The results showed that the case group&#39;s mean depression score decreased from 14.11&plusmn;4.4 to 5.92&plusmn;3.87 which is statistically significant (P<0.001). No significant difference was observed in the control group.<br> <strong>Conclusion</strong>: Findings of the study indicate that dialectical behavior therapy can reduce depression among cancer patients. Therefore, this finding can be used for planning on the basis of cognitive theory or for preventing and reducing depression among cancer patients.</span></span></div> Depression,Cancer Patients,Dialectical Behavior Therapy 94 102 http://mcj.bums.ac.ir/browse.php?a_code=A-10-1-460&slc_lang=fa&sid=1 Masoumeh Pishgar معصومه پیشگر No M.Sc of Clinical Psychology, Birjand University of Medical Sciences, Birjand, Iran کارشناسی ارشد روان شناسی بالینی، دانشگاه علوم پزشکی بیرجند. بیرجند، ایران Mohsen Nadimi محسن ندیمی Yes Mohsen Nadimi, M.Sc. of Clinical Psychology, Faculty of Humanities, Member of Young Researchers and Elites Club, Islamic Azad University, Birjand Branch, Birjand, Iran. Email: tachara_alavi@yahoo.com محسن ندیمی، کارشناسی ارشد روان شناسی بالینی، دانشکده ادبیات و علوم انسانی دانشگاه آزاد اسلامی واحد بیرجند، عضو باشگاه پژوهشگران جوان و نخبگان. بیرجند، ایران. تلفن: 09179330582 پست الکترونیک: tachara_alavi@yahoo.com Reza R Dastjerdi رضا دستجردی No Assistant Professor, Department of Psychology, Faculty of Paramedicine, Birjand University of Medical Sciences, Birjand, Iran استادیار گروه روان شناسی، دانشکده پیراپزشکی دانشگاه علوم پزشکی بیرجند. بیرجند، ایران Fatemeh Shahabizadeh فاطمه شهابی زاده No Assistant Professor, Department of Psychology, Faculty of Humanities, Islamic Azad University, Birjand Branch, Birjand, Iran استادیار گروه روان شناسی،دانشکده ادبیات و علوم انسانی دانشگاه آزاد اسلامی واحد بیرجند. بیرجند، ایران