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  • Title: An examination of decision making in bulimia nervosa.
    Author: Liao PC, Uher R, Lawrence N, Treasure J, Schmidt U, Campbell IC, Collier DA, Tchanturia K.
    Journal: J Clin Exp Neuropsychol; 2009 May; 31(4):455-61. PubMed ID: 18720180.
    Abstract:
    BACKGROUND: Patients with eating disorders favor immediate gratification and ignore long-term negative consequences. This study investigated decision making in bulimia nervosa using the Iowa Gambling Task (IGT) and skin conductance responses (SCR). METHOD: A total of 26 bulimia nervosa patients and 51 healthy controls took part in this study; 29 patients with anorexia nervosa were included for comparison. RESULTS: Bulimia nervosa patients performed poorly in the IGT, but showed no decrease in anticipatory SCR, whereas a markedly diminished anticipatory SCR was seen in the anorexia nervosa group. CONCLUSIONS: This finding does not support the somatic marker hypothesis. Impaired decision making was associated with obsessive-compulsive traits.
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