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Background and Objective: Irrational beliefs underlie a wide range of cognitive impairments. This study was performed to compare the effect of cognitive-behavioral therapy and acceptance and commitment therapy on irrational beliefs of medical students.
Methods: In this quasi-experimental study, 45 medical students of Golestan University of Medical Sciences in north of Iran were non-randomly divided into control, cognitive-behavioral therapy (first intervention) and acceptance, commitment therapy (second intervention) groups. All three groups completed the pre-test, but the control group did not receive any therapy. The intervention groups were received 8 sessions of therapy. The data were collected through Jones's 1969 (IBQ-40) irrational beliefs questionnaire.
Results: The total score of irrational beliefs in the both intervention groups were reduced in comparison with control group (P<0.05). The mean score of the problem-based avoidance subscale (35.26±6.32) was significantly reduced in the second intervention group compared to the first intervention group (30.53±9.47) (P<0.05). Also, the mean scores of emotional impulsivity in the first intervention group (22.73±9.49) were significantly increased compared to the second intervention group (29.93±1.75) (P<0.05).
Conclusion: Two methods of cognitive-behavioral therapy and acceptance and commitment therapy reduce the irrational beliefs of medical students.

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Background and Objective: Obesity considered to be one of the major health problems and risk factors of a wide range of diseases including diabetes, cardiovascular diseases, blood pressure and various types of cancer. This study was performed to compare the effectiveness of integrated group psychotherapy and cognitive-behavioral stress management on body image and mindful eating of obese women.
Methods: In this clinical trial study, 45 obese women were randomly divided into three groups including integrated group therapy (first intervention), behavioral-cognitive stress management (second intervention) and control groups. All of the three groups fulfilled a pretest but the control group did not receive any intervention. Intervention groups received nine sessions of therapy. Data were collected through questionnaires of body image and mindful eating.
Results: Reduction in worry in body image and mindful eating were observed in integrated group therapy and behavioral-cognitive stress management (P<0.05). However, the difference between mean values of body image and mindful eating scores in behavioral-cognitive stress management and integrated groups were 0.852 and 22.93, respectively which was not significant.
Conclusion: Integrated group therapy and cognitive-behavioral stress management was shown to have an effect on the body image and mindful eating in obese women.