Department of Psychology, Texas Christian University, United States.
Department of Psychology, Texas Christian University, United States.
Appetite. 2016 Dec 1;107:274-279. doi: 10.1016/j.appet.2016.08.014. Epub 2016 Aug 11.
Many consumers report that healthy eating is more expensive than unhealthy eating (the affordability axiom). We hypothesize that endorsement of this belief may be driven by the motivation to eat unhealthy foods. We tested this hypothesis in three studies. Study 1 revealed that the affordability axiom is associated with poorer eating habits and higher Body Mass Index (BMI). Study 2 found that the presence of a tasty food cue in the environment increased endorsement of affordability axiom. Study 3 found that these effects were moderated by one's food intake goals. Food cues led non-dieters to increase endorsement of the affordability axiom, but had the opposite effect among those seeking to restrict their calorie intake. The affordability axiom might persist as a means of validating unhealthy food choices.
许多消费者报告称，健康饮食比不健康饮食更昂贵（负担能力公理）。我们假设，这种信念的认可可能是由食用不健康食品的动机所驱动的。我们在三项研究中检验了这一假设。研究 1 表明，负担能力公理与较差的饮食习惯和更高的体重指数（BMI）有关。研究 2 发现，环境中美味食物线索的存在增加了对负担能力公理的认可。研究 3 发现，这些影响受到一个人食物摄入目标的调节。食物线索会促使非节食者增加对负担能力公理的认可，但对那些试图限制卡路里摄入的人则产生相反的效果。负担能力公理可能作为验证不健康食物选择的一种方式而持续存在。
