4.6 Article

Executive dysfunction in eating disorders: Relationship with clinical features

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pnpbp.2022.110649

Keywords

Eating disorders; Executive function; Neuropsychological impairment; Stroop; Trail making test

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This study investigates the impairment of executive functioning in patients with eating disorders and its association with clinical features. The findings suggest that executive function impairment is related to greater severity of eating disorder symptoms, which may lead to a negative treatment outcome.
Eating disorders (ED) are severe mental disorders that may result in significant functional impairment and disability. Neuropsychological studies have consistently found impaired executive function (EF) among ED pa-tients. EF is particularly involved in fundamental skills of daily living and in behavioral and emotional regula-tion. In this study, impairment of executive functioning is investigated in patients with eating disorders and the associations with clinical features and clinical subtypes are analyzed.Method: 75 female patients (m = 22.01 years, sd = 9.15) with eating disorder (43 restrictive anorexia, 30 binge -eating anorexia and 13 bulimia nervosa) and 37 healthy controls (m = 18.54 years, sd = 4.21) were included in the study. An extensive assessment of executive function domains (verbal fluency, set shifting, attention span, selective attention, working memory, inhibitory control and processing speed) was carried out in both groups. Clinical scales for food intake restriction, binge-eating/purging, depression, anxiety and impulsivity were also administered and correlated with scores on executive function tests.Results: Patients with an ED had significantly lower scores than healthy controls in performance of several ex-ecutive function tests, particularly in set shifting, interference control and processing speed (p < .01, in all three domains). Executive function impairment was related to anxious, depressive and eating disorder symptoms (p < .05), regardless of clinical subtype.Conclusions: Executive function impairment in eating disorders is associated with greater ED symptomatic severity and might involve a negative treatment outcome. Therefore, cognitive remediation techniques should probably be considered in a number of severe patients with ED.

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