Higgs Suzanne
School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
Eat Behav. 2007 Apr;8(2):157-61. doi: 10.1016/j.eatbeh.2006.03.004. Epub 2006 Apr 27.
Dietary restraint is associated with impairments on tasks requiring concurrent processing of food-related information and performance of a secondary cognitive task. The aim of the present study was to investigate whether manipulating information about post-task consumption of food enhances the cognitive impairments observed in restrained eaters when they are required to think about food at the same time as performing a simple reaction time task. On separate trials within the same session, restrained (n=29) and unrestrained eaters (n=29) were asked to imagine eating a slice of chocolate cake and drinking glass of water while performing a simple reaction time task. Half the participants were told that they would not be able to consume the cues following the task, while the other half were told that they would be required to eat the cake and drink the water. The reaction time performance of restrained eaters was slowed when imagining eating the cake, relative to imagining drinking the water in both the consumption and no consumption conditions. No effects of cue exposure on reaction time were found for unrestrained eaters. The results suggest that dietary restrained eaters are more reactive to food cues but that this effect is not modulated by information about post-task consumption of the food.
饮食节制与在需要同时处理与食物相关信息和执行次要认知任务的任务中表现受损有关。本研究的目的是调查操纵关于任务后食物消费的信息是否会增强在节制饮食者在执行简单反应时间任务时同时思考食物时所观察到的认知障碍。在同一会话中的不同试验中，要求节制饮食者（n = 29）和非节制饮食者（n = 29）在执行简单反应时间任务时想象吃一片巧克力蛋糕和喝一杯水。一半的参与者被告知任务后他们将无法食用这些提示物，而另一半则被告知他们将被要求吃蛋糕和喝水。相对于在消费和不消费条件下想象喝水，节制饮食者在想象吃蛋糕时的反应时间表现变慢。未发现提示物暴露对非节制饮食者的反应时间有影响。结果表明，饮食节制者对食物提示物更敏感，但这种影响不受关于任务后食物消费的信息调节。
