神经性贪食症中的决策研究
An examination of decision making in bulimia nervosa.
作者信息
Liao Pei-Chi, Uher Rudolf, Lawrence Natalia, Treasure Janet, Schmidt Ulrike, Campbell Iain C, Collier David A, Tchanturia Kate
机构信息
Section of Eating Disorders, Psychological Medicine, Institute of Psychiatry, King's College London, London, UK.
出版信息
J Clin Exp Neuropsychol. 2009 May;31(4):455-61. doi: 10.1080/13803390802251378.
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.
背景
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。
方法
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。
结果
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。
结论
这一发现不支持躯体标记假说。决策受损与强迫特质有关。
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