School of Psychology, Trinity College Dublin, Dublin 2, Ireland.
J Int Neuropsychol Soc. 2010 Jul;16(4):711-5. doi: 10.1017/S1355617710000354. Epub 2010 Apr 21.
The pathological eating behaviors in Anorexia Nervosa (AN), Bulimia Nervosa (BN), and obesity are characterized by a preference for high immediate reward, despite higher future losses in terms of both physical and psychological outcomes. The present study compared the decision making profile of females with a diagnosis of AN (n = 22), BN (n = 17), obesity (n = 18), and a healthy weight comparison group (n = 20) using a standardized neuropsychological test, the Iowa Gambling Task (IGT). The three clinical groups (AN, BN, obesity) were significantly impaired on the IGT compared with the comparison group on both overall task performance and task learning; however, the three clinical groups were not significantly different from each other. Sixty-one percent to 77% of the clinical groups reached the threshold for impairment on the IGT, compared with 15% of the comparison group. The potential basis for this shared decision making profile is discussed.
神经性厌食症（AN）、神经性贪食症（BN）和肥胖症的病理性进食行为的特征是偏好即时高奖励，尽管从身体和心理两个方面来看，未来的损失更高。本研究使用标准化神经心理学测试——爱荷华赌博任务（IGT），比较了 AN（n=22）、BN（n=17）、肥胖（n=18）和健康体重对照组（n=20）女性的决策制定特征。与对照组相比，三个临床组（AN、BN、肥胖）在整体任务表现和任务学习上均显著受损；然而，三个临床组彼此之间没有显著差异。临床组中 61%到 77%达到了 IGT 受损的阈值，而对照组中只有 15%。讨论了这种共享决策制定特征的潜在基础。
