Liao Pei-Chi, Uher Rudolf, Lawrence Natalia, Treasure Janet, Schmidt Ulrike, Campbell Iain C, Collier David A, Tchanturia Kate
Section of Eating Disorders, Psychological Medicine, Institute of Psychiatry, King's College London, London, UK.
J Clin Exp Neuropsychol. 2009 May;31(4):455-61. doi: 10.1080/13803390802251378.
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).
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.
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.
This finding does not support the somatic marker hypothesis. Impaired decision making was associated with obsessive-compulsive traits.
饮食失调患者倾向于即时满足，而忽视长期的负面后果。本研究使用爱荷华赌博任务（IGT）和皮肤电反应（SCR）来调查神经性贪食症患者的决策情况。
共有26名神经性贪食症患者和51名健康对照者参与了本研究；纳入了29名神经性厌食症患者进行比较。
神经性贪食症患者在IGT中表现不佳，但预期SCR没有下降，而神经性厌食症组的预期SCR明显降低。
这一发现不支持躯体标记假说。决策受损与强迫特质有关。
