Preference for Safe Over Risky Options in Binge Eating.
Preference for Safe Over Risky Options in Binge Eating.
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DOI：
10.3389/fnbeh.2016.00065
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发表时间：
2016
影响因子：
3
通讯作者：
Coricelli G
中科院分区：
文献类型：
--
作者：
Neveu R;Fouragnan E;Barsumian F;Carrier E;Lai M;Nicolas A;Neveu D;Coricelli G
暴饮暴食通常被视为一种失控和冲动的行为。但是，人们对狂热患者(主要是女性)在风险或不确定情况下做出基本决策的实际行为知之甚少。在健康女性中，压力提示会使行为倾向于更安全的选择，这引发了一个问题，即被狂热的患者视为威胁的食物提示是否会调节患者的行为，使其倾向于更安全的选择。一项横断面研究包括20例神经性暴食症(BN)和23例神经性厌食症(ANB)患者，以及两组对照组(22例非绑定限制性神经性厌食症患者和20名健康受试者)，没有任何伴发的冲动性障碍。我们用已知概率的赌博任务评估风险决策，用未知获胜概率的气球模拟冒险任务(BART)评估不确定情况下的决策，包括中性、暴饮暴食和压力提示三种线索条件下的决策。在赌博任务中，狂欢和ANR患者采取了类似的更安全的态度，与中性线索相比，当食物启动时，他们一致地引起了更高的对损失的厌恶。BART中的BN和ANR患者也是如此。在控制了焦虑水平后，这些在食物条件下的安全态度与在压力下的态度相似。在BART中，与中性条件相比，ANB患者在食物选择上表现出更高的可变性。这种较高的可变性与丢弃不相关信息的难度较大有关。所有这些结果表明，在风险和不确定性下的决策并没有从根本上改变所有这些患者。
Binge eating has been usually viewed as a loss of control and an impulsive behavior. But, little is known about the actual behavior of binging patients (prevalently women) in terms of basic decision-making under risk or under uncertainty. In healthy women, stressful cues bias behavior for safer options, raising the question of whether food cues that are perceived as threatening by binging patients may modulate patients’ behaviors towards safer options. A cross-sectional study was conducted with binging patients (20 bulimia nervosa (BN) and 23 anorexia nervosa binging (ANB) patients) and two control groups (22 non-binging restrictive (ANR) anorexia nervosa patients and 20 healthy participants), without any concomitant impulsive disorder. We assessed decisions under risk with a gambling task with known probabilities and decisions under uncertainty with the balloon analog risk taking task (BART) with unknown probabilities of winning, in three cued-conditions including neutral, binge food and stressful cues. In the gambling task, binging and ANR patients adopted similar safer attitudes and coherently elicited a higher aversion to losses when primed by food as compared to neutral cues. This held true for BN and ANR patients in the BART. After controlling for anxiety level, these safer attitudes in the food condition were similar to the ones under stress. In the BART, ANB patients exhibited a higher variability in their choices in the food compared to neutral condition. This higher variability was associated with higher difficulties to discard irrelevant information. All these results suggest that decision-making under risk and under uncertainty is not fundamentally altered in all these patients.