Measuring eating disorder attitudes and behaviors: a reliability generalization study

Journal of Eating Disorders

Leslie C Morey¹  Suman Ambwani²  Crystal A Pearson¹  David H Gleaves³ 

[1] Texas A&M University, College Station, TX, USA;Dickinson College, Carlisle, PA, USA;School of Psychology, Social Work and Social Policy, University of South Australia, Magill Campus, GPO Box 2471, Adelaide, SA 5001, Australia

关键词: Eating attitudes test;    Eating disorder inventory;    Reliability generalization;    Psychometric properties;    Assessment;    Eating disorders;   

Others  :  800980
DOI  :  10.1186/2050-2974-2-6

 received in 2013-11-19, accepted in 2014-02-25,  发布年份 2014

【 摘 要 】

Background

Although score reliability is a sample-dependent characteristic, researchers often only report reliability estimates from previous studies as justification for employing particular questionnaires in their research. The present study followed reliability generalization procedures to determine the mean score reliability of the Eating Disorder Inventory and its most commonly employed subscales (Drive for Thinness, Bulimia, and Body Dissatisfaction) and the Eating Attitudes Test as a way to better identify those characteristics that might impact score reliability.

Methods

Published studies that used these measures were coded based on their reporting of reliability information and additional study characteristics that might influence score reliability.

Results

Score reliability estimates were included in 26.15% of studies using the EDI and 36.28% of studies using the EAT. Mean Cronbach’s alphas for the EDI (total score = .91; subscales = .75 to .89), EAT-40 (total score = .81) and EAT-26 (total score = .86; subscales = .56 to .80) suggested variability in estimated internal consistency. Whereas some EDI subscales exhibited higher score reliability in clinical eating disorder samples than in nonclinical samples, other subscales did not exhibit these differences. Score reliability information for the EAT was primarily reported for nonclinical samples, making it difficult to characterize the effect of type of sample on these measures. However, there was a tendency for mean score reliability to be higher in the adult (vs. adolescent) samples and in female (vs. male) samples.

Conclusions

Overall, this study highlights the importance of assessing and reporting internal consistency during every test administration because reliability is affected by characteristics of the participants being examined.

【 授权许可】

   
2014 Gleaves et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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