Neimeijer Renate A M, Roefs Anne, Ostafin Brian D, de Jong Peter J
Department of Clinical Psychology and Experimental Psychopathology, University of GroningenGroningen, Netherlands.
Center for Eating Disorders, Accare Child and Adolescent PsychiatrySmilde, Netherlands.
Front Psychol. 2017 Apr 11;8:525. doi: 10.3389/fpsyg.2017.00525. eCollection 2017.
Although restrained eaters are motivated to control their weight by dieting, they are often unsuccessful in these attempts. Dual process models emphasize the importance of differentiating between controlled and automatic tendencies to approach food. This study investigated the hypothesis that heightened automatic approach tendencies in restrained eaters would be especially prominent in contexts where food is irrelevant for their current tasks. Additionally, we examined the influence of mood on the automatic tendency to approach food as a function of dietary restraint. An Affective Simon Task-manikin was administered to measure automatic approach tendencies where food is task-irrelevant, and a Stimulus Response Compatibility task (SRC) to measure automatic approach in contexts where food is task-relevant, in 92 female participants varying in dietary restraint. Prior to the task, sad, stressed, neutral, or positive mood was induced. Food intake was measured during a bogus taste task after the computer tasks. Consistent with their diet goals, participants with a strong tendency to restrain their food intake showed a relatively weak approach bias toward food when food was task-relevant (SRC) and this effect was independent of mood. Restrained eaters showed a relatively strong approach bias toward food when food was task-irrelevant in the positive condition and a relatively weak approach in the sad mood. The weak approach bias in contexts where food is task-relevant may help high-restrained eaters to comply with their diet goal. However, the strong approach bias in contexts where food is task-irrelevant and when being in a positive mood may interfere with restrained eaters' goal of restricting food-intake.
尽管节食者试图通过节食来控制体重,但这些尝试往往不成功。双加工模型强调区分接近食物的控制性倾向和自动性倾向的重要性。本研究调查了这样一个假设:节食者增强的自动接近倾向在食物与当前任务无关的情境中会尤为突出。此外,我们考察了情绪作为饮食限制的一个函数对接近食物的自动倾向的影响。对92名饮食限制程度不同的女性参与者进行了情感西蒙任务人偶实验,以测量在食物与任务无关的情况下的自动接近倾向,还进行了刺激反应相容性任务(SRC)以测量在食物与任务相关的情境中的自动接近倾向。在任务前,诱导出悲伤、压力、中性或积极情绪。在计算机任务后,通过一个虚假味觉任务测量食物摄入量。与她们的节食目标一致,食物摄入量限制倾向较强的参与者在食物与任务相关的情况下(SRC)对食物的接近偏差相对较弱,且这种效应与情绪无关。在积极情绪下,节食者在食物与任务无关时对食物表现出相对较强的接近偏差,而在悲伤情绪下接近偏差相对较弱。在食物与任务相关的情境中接近偏差较弱可能有助于高度节食者遵守他们的节食目标。然而,在食物与任务无关且处于积极情绪时接近偏差较强可能会干扰节食者限制食物摄入的目标。