Comparison of the Effectiveness of the Transtheoretical Model and CognitiveBehavioral Therapy in Adolescents' Eating Behavior and Weight Loss

Document Type : Original Article


1 PhD Student, Department of Psychology, United Arab Emirates Branch, Islamic Azad University, Dubai, UAE.

2 Assistant Professor, Department of Psychology, Payame Noor University, Tehran, Iran.

3 Assistant Professor, Department of Psychology, Karaj Branch, Islamic Azad University, Alborz, Iran.



Background: Nutrition education is a key component of health promotion programs and leads to improvement of nutritional behaviors of adolescents. Understanding the stages of cognitive-behavioral therapy in eating behavior and weight loss in adolescents is important.
Objectives: The purpose of this study was to compare the effectiveness of the transtheoretical model and cognitive-behavioral therapy on eating behavior and weight loss in adolescents.
Method: The research method was semi-experimental with a pre-test and post-test design with a two-month follow-up with the control group. The statistical population consisted of all adolescents referred to counseling centers in Mashhad in autumn 2019; 45 of them were selected by convenience sampling method and were divided into 3 experimental, second, and control groups. The research questionnaires were Cappelleri et al.'s (2009) eating behavior questionnaire. Data analyzed by analysis of covariance test using SPSS.25 software.
Results: The results showed that the effectiveness of the transtheoretical model and cognitive-behavioral therapy was different on eating behavior so that cognitive-behavioral therapy is more effective than the transtheoretical model (p <0.001).
Conclusions: Cognitive-behavioral therapy on eating behavior and weight loss of adolescents was more effective in comparison with the model of the change process. It is suggested that cognitive-behavioral therapy should be considered in the treatment of appropriate principles of nutrition and control of adolescents' weight.


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