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The discriminant validity of the Eating Disorder Inventory--2
C Schoemaker1, M Verbraak, R Breteler
1Department of Clinical Psychology and Personality, University of Nijmegen, The Netherlands.
The British Journal of Clinical Psychology
|December 24, 1997
Abstract:
The scores of 78 bulimia nervosa (BN) patients and 67 general psychiatric outpatients on the Revised Eating Disorder Inventory (EDI-2) were compared in a multivariate discriminant analysis. The bulimia scale was found to correctly classify 97 per cent of all cases. Of the EDI-2 scales thought to be not directly related to food and weight, only interoceptive awareness (IA) and asceticism (AS) showed discriminative validity. Three eating-related items were found to account for the discriminative value of the IA scale, and the new AS scale was found to be a discriminative extension of the EDI.