Do eating disorder voice characteristics predict treatment outcomes in anorexia nervosa? A pilot study.

Individuals with anorexia nervosa often describe experiencing an internal "voice" of their disorder, which previous research has associated with multiple dimensions of eating pathology. This pilot study examined whether eating disorder measures use invoice characteristics at the outset of outpatient therapy predicted changes in disordered eating over the course of treatment. Participants were 14 individuals meeting ICD-10 criteria for anorexia nervosa. Participants completed measures relating to the severity of disordered eating and voice-related characteristics (perceived voice power and metacognitive appraisals about its nature) at the start and end of therapy. Results indicated that the perceived power of the eating disorder was reduced over the course of outpatient therapy, although its other characteristics remained stable. Greater levels of voice power, omnipotence and benevolence at the outset of therapy were related to greater improvements in eating attitudes. No voice-related characteristics were associated with changes in weight. These findings suggest that voice-related appraisals do not obstruct the effectiveness of outpatient therapies for anorexia nervosa. Further studies are needed to ratify these preliminary findings.