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Aim and Background:Increasing of being responsive to the present treatments including cognitive-behavioral therapy is the priority of clinical research and motivational intervening is considered as a hopeful intervention.The aim of this study was to determine the effectiveness of motivational interviewing on the severity of symptoms of patients with obsessive – compulsive disorder. Methods and Materials: This research is a clinical trial study. Pre-test, post-test with a control group were done  on  40 people suffering from  OCD in 2009. The subjects were selected by convenience sampling and were randomly classified into the experimental group (No.=20) and the control group (No.=20). The intervention consisting of ten sessions of group Cognitive-Behavioral Therapy and motivational interviewing was given to the experimental group . The data obtained by Yale – Brown Obsessive– Compulsive Scale  and Sheehan Disability Scale was analyzed by statistical tests of repeated measures  analysis and t-test. Findings: The results revealed that the average of Yale - Browen score of the intensity of Obsessive– Compulsive symptoms in pre-intervention, post-intervention and follow-up stages were 29.64 , 19.92  , 20 in the control group and 34.58 , 17.23 , 19.35 in the experimental group respectively.The variance analysis  test repeated measures showed that after the intervention also there was no significant difference between the two groups (p = 0.06) but the decrease in the intensity of OCD symptoms in the experimental group was more than the control group( p = 0.0001) and  this decrease continued until the follow-up. Conclusion: Combining group motivational interviewing with cognitive-behavioral therapy is an effective technique in decreasing the severity of the symptoms of obsessive-compulsive disorder and eventually decreasing the disability produced by the symptoms.

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Aim and Background: The aim of the present study was to determine the effectiveness of transactional analysis based on motivational interviewing on patients with eating disorders. Methods and Materials: This quasi-experimental study was performed using a multiple baseline single case design. The study subjects consisted of 2 female clients of the psychological counseling unit of Imen Teb Zagros Center in Shiraz, Iran, in 2013. The participants were selected by purposive sampling method and underwent transactional analysis based on motivational interviewing. The subjects completed the Ahwaz Eating Disorder, Food Habits, Body Attitudes, Personality States, Interpersonal Relationships, and Self-esteem Questionnaires during pre-treatment (baseline) and at the third, eighth, fourteenth, nineteenth, and twenty-third sessions, and one-month follow-up. Moreover, their body mass index (BMI) was measured during the course of the treatment. Recovery percentage and the effect size were used for data analysis. For data analysis, percentage improvement and effect size index were used. Findings: The results showed that motivational interview-based transactional analysis was effective in curing patients with eating disorders and was been able to cause lasting and significant changes in all targets. At the end of the treatment and follow-up period, both participants demonstrated overall improvement in eating disorder (73%), eating habits (74%), body image (60%), interpersonal relationships (62%), self-esteem (54%), and personality states (76%). Conclusions: Transactional analysis based on motivational interviewing can be an effective treatment for patients with anorexia nervosa and bulimia nervosa.

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Aim and Background: Obesity in childhood, as a global and growing health problem, is the cause of many chronic diseases in adulthood, which is associated with several socio-psychological problems such as low self-confidence and social isolation. In order to improve the psychosomatic problems of obese children, this study aimed to investigate the effect of motivational interviewing on body mass index (BMI) and self-esteem in obese girls. Methods and Materials: This experimental study was conducted with experimental and control groups. A pretest and a posttest were performed and the process was followed up for 3 months. The sample was comprised of twenty-four 10-12-year girl students who were obese with BMI more than 25 in 2015. They were selected through cluster-random sampling from a school in the first district of Isfahan city. The mothers of both groups were trained about the principles of healthy feeding in 4 sessions. Psychodrama intervention motivational interviewing was applied only in the experimental group during the six 2-hour sessions of group therapy. The data collection tools consisted of the BMI and Rosenberg self-esteem scale (RSES). The data were analyzed via analysis of variance with repeated measures. Findings: The effects of motivational interviewing in BMI and self-esteem of the experimental group were statistically significant (P ≤ 0.05). Conclusions: The therapeutic intervention of motivational interviewing would be helpful in order to reduce the weight of obese children and to increase their self-esteem.