Mobbs Olivia, Van der Linden Martial, d'Acremont Mathieu, Perroud Alain
Cognitive Psychopathology and Neuropsychology Unit, Faculty of Psychology and Educational Sciences, University of Geneva, Switzerland.
Eat Behav. 2008 Dec;9(4):455-61. doi: 10.1016/j.eatbeh.2008.07.002. Epub 2008 Aug 5.
Studies suggest that attentional deficits and biases play a role in the development and maintenance of eating disorders. Many of these studies have methodological limitations and their results are difficult to interpret. In this study, we examine attentional deficits and biases in bulimia.
18 bulimic participants and 18 controls performed an adaptation of the go/no-go affective shifting task. That task allows the investigation of attention, inhibitory control and mental flexibility for stimuli related to the body and food.
Bulimic participants tended to react faster than controls in the go/no-go affective task. They also had poorer discrimination ability than controls and showed inhibition problems, particularly when the targets were related to food. The magnitude of these effects ranged from moderate to large. No difference between groups was found concerning mental flexibility.
These results suggest that bulimics present cognitive deficits and are more impulsive, especially with food-related stimuli. These cognitive deficits and biases may be at least partially responsible for the development and maintenance of bulimia.
研究表明，注意力缺陷和偏差在饮食失调的发展和维持中起作用。这些研究中有许多存在方法学上的局限性，其结果难以解释。在本研究中，我们考察了神经性贪食症中的注意力缺陷和偏差。
18名神经性贪食症参与者和18名对照组人员进行了一项对“停止信号情感转换任务”的改编任务。该任务可用于研究对与身体和食物相关刺激的注意力、抑制控制和心理灵活性。
在停止信号情感任务中，神经性贪食症参与者的反应往往比对照组更快。他们的辨别能力也比对照组差，并且表现出抑制问题，尤其是当目标与食物相关时。这些影响的程度从中度到重度不等。在心理灵活性方面未发现组间差异。
这些结果表明，神经性贪食症患者存在认知缺陷且更冲动，尤其是对与食物相关的刺激。这些认知缺陷和偏差可能至少部分导致了神经性贪食症的发展和维持。
