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The discriminant validity of the Eating Disorder Inventory‐2
Author(s) -
Schoemaker Casper,
Verbraak Marc,
Breteler Rien,
Staak Cees
Publication year - 1997
Publication title -
british journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.479
H-Index - 92
eISSN - 2044-8260
pISSN - 0144-6657
DOI - 10.1111/j.2044-8260.1997.tb01268.x
Subject(s) - psychology , discriminant validity , bulimia nervosa , discriminative model , eating disorders , eating disorder inventory , scale (ratio) , psychiatry , psychometrics , test validity , clinical psychology , artificial intelligence , internal consistency , computer science , physics , quantum mechanics
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.