A new instrument, the Questionnaire for Eating Disorder Diagnoses (Q-EDD; Mintz, O’Halloran, Mulholland & Schneider, 1997), is being adapted for use in Spain and other hispanic countries. The 50-question Q-EDD operacionalizes eating disorder criteria of the DSM-IV. Diagnoses are generated by a scoring manual that consists of flowchart decision rules. Subjects with an eating disorder are classified in these categories: anorexia nervosa, bulimia nervosa and eating disorders not specified otherwise. Subjects without an eating disorder are classified as symptomatic or asymptomatic. Some psychometric properties of the Q-EDD are analyzed in two studies with students and clinical samples. Interscorer agreement was satisfactory (κ= 0.80 – 0.92). Several measures show convergence/divergence in EAT-26 and BITE scores with respect to diagnostic groups of Q-EDD.