Department of Psychology, University of Hawaii at Manoa, Sakamaki C400, 2530 Dole Street, Honolulu, HI 96822, USA.
Appetite. 2013 Sep;68:92-7. doi: 10.1016/j.appet.2013.04.023. Epub 2013 Apr 28.
The present study examined whether low-fat labeling and caloric information affect food intake, calorie estimates, taste preference, and health perceptions. Participants included 175 female undergraduate students who were randomly assigned to one of four experimental conditions. A 2×2 between subjects factorial design was used in which the fat content label and caloric information of chocolate candy was manipulated. The differences in food intake across conditions did not reach statistical significance. However, participants significantly underestimated the calorie content of low-fat-labeled candy. Participants also rated low-fat-labeled candy as significantly better tasting when they had caloric information available. Participants endorsed more positive health attributions for low-fat-labeled candy than for regular-labeled candy, independent of caloric information. The inclusion of eating attitudes and behaviors as covariates did not alter the results. The study findings may be related to the "health halo" associated with low-fat foods and add to the research base by examining the interaction between low-fat and calorie labeling.
本研究旨在探讨低脂标签和卡路里信息是否会影响食物摄入量、卡路里估计、口味偏好和健康感知。参与者包括 175 名女性本科学生,他们被随机分配到四个实验条件之一。采用 2×2 被试间因子设计,对巧克力糖果的脂肪含量标签和卡路里信息进行了操作。各条件下的食物摄入量差异没有达到统计学意义。然而,参与者明显低估了低脂标签糖果的卡路里含量。当参与者有卡路里信息可用时,他们还会对低脂标签糖果的味道给予更高的评价。无论是否有卡路里信息,参与者都认为低脂标签糖果的健康属性比普通标签糖果更积极。将饮食态度和行为作为协变量纳入后,结果并没有改变。研究结果可能与低脂食品相关的“健康光环”有关,并通过检查低脂和卡路里标签之间的相互作用,为研究基础增添了新内容。