School of Psychological Science, University of Western Australia, Perth, WA, Australia.
School of Psychology, University of Sydney, Camperdown, NSW, Australia.
Appetite. 2024 Jan 1;192:107095. doi: 10.1016/j.appet.2023.107095. Epub 2023 Oct 25.
People know that overconsumption of high-fat high-sugar (HFHS) foods have negative consequences for physical and cognitive wellbeing but continue to consume these foods in excess, leading to recent proposals to model obesity as an addiction disorder. The current experiment tested, in a large undergraduate sample (N = 306), the hypothesis that obesity and overconsumption is linked with an oversensitivity to rewards that drives attentional biases towards foods and food-associated cues. Using a modified emotion-induced blindness task with food-related distractors, we examined the extent to which attentional biases to images of HFHS foods were accounted for by BMI, HFHS food intake, self-reported hunger, time since last meal, diet status, food preferences, and attentional control. We also examined whether the same individual differences predicted attentional priority to cues that have a learned association with HFHS foods (i.e., images of food logos). Contrary to our predictions, higher BMI predicted less attentional priority for images of food and food logos. At the same time, increased consumption of HFHS foods predicted increased attentional priority for food images, whereas dieting predicted increased attentional priority for food logo images. Our results suggest that different people may preferentially attend to food versus food logo imagery based on their relationships with food. More broadly, our results support the theoretical perspective that attentional biases to food-associated stimuli can be affected by various competing, state-related factors.
人们知道,过度摄入高脂肪高糖(HFHS)食物会对身心健康产生负面影响,但仍会过量食用这些食物,这导致最近有人提出将肥胖视为一种成瘾障碍。本实验在一个大型本科生样本(N=306)中测试了一个假设,即肥胖和过度消费与对奖励的过度敏感有关,这种过度敏感会导致对食物和与食物相关的线索的注意力偏见。我们使用带有与食物相关的分心物的改良情绪诱导失明任务,研究了对 HFHS 食物图像的注意力偏见在多大程度上可以用 BMI、HFHS 食物摄入量、自我报告的饥饿感、上次进食后的时间、饮食状态、食物偏好和注意力控制来解释。我们还研究了相同的个体差异是否可以预测对与 HFHS 食物有学习关联的线索的注意力优先级(即,食物徽标图像)。与我们的预测相反,较高的 BMI 预示着对食物和食物徽标图像的注意力优先级较低。与此同时,HFHS 食物摄入量的增加预示着对食物图像的注意力优先级增加,而节食则预示着对食物徽标图像的注意力优先级增加。我们的研究结果表明,不同的人可能会根据与食物的关系,优先关注食物与食物徽标图像。更广泛地说,我们的研究结果支持了这样一种理论观点,即对与食物相关的刺激的注意力偏见可以受到各种相互竞争的、与状态相关的因素的影响。