Cavanagh Kevin V, Kruja Blina, Forestell Catherine A
Department of Psychology, The College of William & Mary, Williamsburg, VA, USA.
Department of Psychology, The College of William & Mary, Williamsburg, VA, USA.
Appetite. 2014 Nov;82:1-7. doi: 10.1016/j.appet.2014.06.100. Epub 2014 Jun 27.
The goal of the current study was to determine whether provision of brand and caloric information affects sensory perception and consumption of a food in restrained (n=84) and unrestrained eaters (n=104). Using a between-subjects 2 × 2 × 3 design, female restrained and unrestrained eaters were asked to taste and rate a cookie that was labeled with a brand associated with healthful eating (Kashi(®)) or one associated with unhealthful eating (Nabisco(®)). Additionally, some participants were presented with a nutrition label alongside the brand name indicating that one serving contained 130 calories (Low-Calorie Condition), or 260 calories (High-Calorie Condition). The remaining participants were not shown a nutrition label (No Label Condition). Results indicated that those in the No Label or the High-Calorie Condition perceived the healthful branded cookie to have a better flavor than those who received the unhealthful branded cookie regardless of their restraint status. However, restrained eaters in the No Label Condition consumed more of the healthful than the unhealthful branded cookie, whereas those in the Low-Calorie Condition consumed more of the unhealthful than the healthful branded cookie. In contrast, unrestrained eaters ate more of the healthful branded cookie regardless of the caloric information provided. Thus, although restrained and unrestrained eaters' perceptions are similarly affected by branding and caloric information, brands and caloric information interact to affect restrained eaters' consumption. This study reveals that labeling foods as low calorie may create a halo effect which may lead to over-consumption of these foods in restrained eaters.
本研究的目的是确定提供品牌和热量信息是否会影响节食者(n = 84)和非节食者(n = 104)对食物的感官认知及摄入量。采用组间2×2×3设计,让女性节食者和非节食者品尝并评价一款贴有与健康饮食相关品牌(家乐氏(Kashi(®)))或不健康饮食相关品牌(纳贝斯克(Nabisco(®)))标签的曲奇饼干。此外,部分参与者在品牌名称旁还看到了营养标签,表明一份含有130卡路里(低热量组)或260卡路里(高热量组)。其余参与者未看到营养标签(无标签组)。结果表明,无论其节食状态如何,无标签组或高热量组的参与者认为健康品牌的曲奇饼干比不健康品牌的曲奇饼干味道更好。然而,无标签组的节食者食用健康品牌曲奇饼干的量多于不健康品牌的,而低热量组的节食者食用不健康品牌曲奇饼干的量多于健康品牌的。相比之下,无论提供何种热量信息,非节食者食用健康品牌曲奇饼干的量都更多。因此,尽管节食者和非节食者的认知同样受到品牌和热量信息的影响,但品牌和热量信息相互作用,影响着节食者的摄入量。这项研究表明,将食物标注为低热量可能会产生光环效应,导致节食者过度食用这些食物。