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Poor interoceptive awareness is often cited as a key feature of eating disorders, yet the precise nature of the deficits and their relationship to eating pathology remains unclear. Interoceptive awareness includes both acceptance of affective experience and clarity regarding emotional responses. The aim of the current study was to parse these components and examine the association between these deficits and two representative eating disorder symptoms: dietary restraint and binge eating. Participants were 50 eating disorder patients who completed a medical examination, clinical interview and symptom self-report measures. Results of regression analyses controlling for BMI and illness duration indicated that non-acceptance, not lack of clarity, was significantly associated with dietary restraint. Neither predicted binge eating. Findings suggest that negative reactions to emotional responses may contribute to the development or maintenance of dietary restraint. Results highlight the need to investigate the experience of emotional arousal in individuals with eating disorders using experimental methods that deconstruct the components of interoceptive awareness, and the potential utility of treatments that increase comfort with affective experience for individuals with more restrictive patterns.
Merwin et al. (Fri,) studied this question.