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Volume 11, Issue 2 (Summer 2009)
Advances in Cognitive Sciences 2009, 11(2): 38-46 |
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Zeinab S, Vafae M. The Evaluation of Psychometric Properties of Eating Disorder Beliefs Questionnaire (EDBQ). Advances in Cognitive Sciences 2009; 11 (2) :38-46
URL: http://icssjournal.ir/article-1-37-en.html
URL: http://icssjournal.ir/article-1-37-en.html
1- Tarbiat Modarres University, Tehran, Iran
Abstract: (2942 Views)
Objective: The aim of the present study was to evaluate the psychometric properties of Eating Disorder Beliefs Questionnaire (EDBQ) (Cooper et al. 1997).
Method: The sample consisted of 18 classes (403 high school girls) which were selected through cluster random sampling from among public high schools in the City of Tehran. All participants responded to Persian version of the EDBQ and the Young Schema Questionnaire-Short Form (YSQSF).
Results: The validity of the questionnaire was investigated using convergent and discriminative validity and exploratory factor analysis. Results from factor analysis of the EDBQ using Varimax rotation method, yielded 4 factors labeled: 1- Negative Self Beliefs; 2- Other Acceptance; 3- Self Acceptance; and 4- Overeating Control, which explained more than 46.26% of the total variance. EDBQ inter-factor correlations ranged from 0.31 to 0.84 (p<0.01). Convergent validity was assessed by computing a correlation coefficient between EDBQ and YSQ-SF total scores, which was 0.48 (p<0.01). The reliability of EBDQ was calculated using Alpha Cronbach and split-half method which was 0.89 and 0.72 respectively. Conclusion:
Conclusion: The findings of this study, it could be stated that EDBQ can be used as a reliable instrument for evaluating eating disorder beliefs in the Iranian population.
Method: The sample consisted of 18 classes (403 high school girls) which were selected through cluster random sampling from among public high schools in the City of Tehran. All participants responded to Persian version of the EDBQ and the Young Schema Questionnaire-Short Form (YSQSF).
Results: The validity of the questionnaire was investigated using convergent and discriminative validity and exploratory factor analysis. Results from factor analysis of the EDBQ using Varimax rotation method, yielded 4 factors labeled: 1- Negative Self Beliefs; 2- Other Acceptance; 3- Self Acceptance; and 4- Overeating Control, which explained more than 46.26% of the total variance. EDBQ inter-factor correlations ranged from 0.31 to 0.84 (p<0.01). Convergent validity was assessed by computing a correlation coefficient between EDBQ and YSQ-SF total scores, which was 0.48 (p<0.01). The reliability of EBDQ was calculated using Alpha Cronbach and split-half method which was 0.89 and 0.72 respectively. Conclusion:
Conclusion: The findings of this study, it could be stated that EDBQ can be used as a reliable instrument for evaluating eating disorder beliefs in the Iranian population.
Keywords: Psychometric Properties, Validity, Reliability, Eating Disorder Beliefs Questionnaire (EDBQ)
Type of Study: Research |
Subject:
Special
Received: 2009/02/19 | Accepted: 2009/04/21 | Published: 2009/06/22
Received: 2009/02/19 | Accepted: 2009/04/21 | Published: 2009/06/22
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