情绪对两类限制性饮食者行为抑制控制的影响

The Effects of Emotion on Behavioral Inhibitory Control of Two Different Subgroups of Restrained Eaters

限制性饮食者被认为是为了降低和维持体重而严格控制饮食的慢性节食人群。边界理论认为,限制性进食消耗大量认知资源。而情绪占用认知资源,导致解脱进食致使节食失败。情绪对成功和失败两类限制性饮食者行为抑制控制的影响尚未明确。本研究采用Go-Nogo范式分别探讨了阈上和阈下情绪对两类限制性饮食者抑制控制能力的影响。结果发现失败的限制性饮食者对食物线索的抑制控制能力异常地受负性情绪的干扰,成功的限制性饮食者对食物的抑制控制能力不受负性情绪的干扰,负性情绪对两类限制性饮食者影响的差异可能是限制性饮食成败的重要原因之一。

Restrained eaters have been defined as chronic dieters who restrict their food intake to lose or keep their bodyweight. Boundary theory of eating suggests that restricting food consumption takes vast cognitive resources, so it may impact food consumption of restrained eaters while emotion occupies cognitive resources. However, the effects of emotion on inhibitory control of different subgroups of restrained eaters are still unclear. Present study is aimed to investigate the difference of inhibitory control by Go-Nogo paradigm between two different subgroups of restrained eaters under both threshold emotion and subliminal affective priming. The results show that the inhibitory control in response to food-cues of unsuccessful restrained eaters is particularly interfered by negative emotion. On the contrary, there is no such effect on successful restrained eaters. The different influence of negative emotion on different subgroups might be one of the most important factors for successful restrained eating.