University of Calgary, Canada.
Appetite. 2016 May 1;100:55-63. doi: 10.1016/j.appet.2016.02.008. Epub 2016 Feb 9.
Food addiction and emotional eating both influence eating and weight, but little is known of how negative mood affects the attentional processes that may contribute to food addiction. The purpose of this study was to compare attention to food images in adult women (N = 66) with versus without food addiction, before and after a sad mood induction (MI). Participants' eye fixations were tracked and recorded throughout 8-s presentations of displays with healthy food, unhealthy food, and non-food images. Food addiction was self-reported using the Yale Food Addiction Scale. The sad MI involved watching an 8-min video about a young child who passed away from cancer. It was predicted that: (1) participants in the food addiction group would attend to unhealthy food significantly more than participants in the control group, and (2) participants in the food addiction group would increase their attention to unhealthy food images following the sad MI, due to increased emotional reactivity and poorer emotional regulation. As predicted, the sad MI had a different effect for those with versus without food addiction: for participants with food addiction, attention to unhealthy images increased following the sad MI and attention to healthy images decreased, whereas for participants without food addiction the sad MI did not alter attention to food. These findings contribute to researchers' understanding of the cognitive factors underlying food addiction.
食物成瘾和情绪性进食都会影响进食和体重,但人们对负面情绪如何影响可能导致食物成瘾的注意力过程知之甚少。本研究的目的是比较有和没有食物成瘾的成年女性(N=66)在悲伤情绪诱导(MI)前后对食物图像的注意力。参与者的眼动追踪和记录了 8 秒展示健康食品、不健康食品和非食品图像的过程。食物成瘾通过耶鲁食物成瘾量表(Yale Food Addiction Scale)进行自我报告。悲伤 MI 包括观看一段 8 分钟的视频,内容是一个因癌症去世的小孩。预测如下:(1)食物成瘾组的参与者会比对照组的参与者更关注不健康的食物;(2)由于情绪反应性增强和情绪调节能力下降,食物成瘾组的参与者在悲伤 MI 后会增加对不健康食物图像的注意力。正如预测的那样,悲伤 MI 对有和没有食物成瘾的人有不同的影响:对于有食物成瘾的参与者,悲伤 MI 后对不健康图像的注意力增加,对健康图像的注意力减少,而对于没有食物成瘾的参与者,悲伤 MI 不会改变对食物的注意力。这些发现有助于研究人员理解食物成瘾的认知因素。