Are Front-of-Package Warning Labels More Effective at Communicating Nutrition Information than Traffic-Light Labels? A Randomized Controlled Experiment in a Brazilian Sample.
Are Front-of-Package Warning Labels More Effective at Communicating Nutrition Information than Traffic-Light Labels? A Randomized Controlled Experiment in a Brazilian Sample.
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DOI：
10.3390/nu10060688
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发表时间：
2018-05-28
期刊：
影响因子：
5.9
通讯作者：
Jaime PC
中科院分区：
文献类型：
--
作者：
Khandpur N;de Morais Sato P;Mais LA;Bortoletto Martins AP;Spinillo CG;Garcia MT;Urquizar Rojas CF;Jaime PC
背景：巴西目前正在讨论包装正面标签的实施问题。这项研究测试，如果警告标签（WL）提高消费者的理解，感知和购买意愿相比，警示灯标签（TL）在1607巴西成年人。研究方法：在这个在线的随机对照实验中，参与者看到了10种产品的图片，并回答了两次问题一次是在无标签的对照条件下，另一次是在随机分配的标签条件下。使用单因素ANOVA或卡方检验估计对照和标签条件下WL和TL之间响应的相对差异。结果如下：与TL相比，在产品上展示WL有助于参与者：（i）提高他们对过量营养素含量的理解（27.0%对8.2%，p < 0.001）;（ii）提高他们识别更健康产品的能力（24.6%对3.3%，p < 0.001）;（iii）降低了对产品健康的看法;以及（iv）相对于对照条件，正确识别更健康的产品（14.0%对6.9%，p < 0.001）。与对照条件相比，使用WL的人比例也有所增加：（v）表示有意购买相对健康的选择（16.1%对9.8%，p < 0.001）;（vi）选择不购买任何产品（13.0%对2.9%，p < 0.001）。与TLL组相比，WL组的参与者对标签的看法明显更好。结论：与TLL相比，WLs在改善消费者食品选择方面更有效。
Background: Brazil is currently debating the implementation of front-of-package labels. This study tested if Warning labels (WLs) improved consumer understanding, perceptions, and purchase intentions compared to Traffic-Light labels (TLLs) in 1607 Brazilian adults. Methods: In this online, randomized controlled experiment participants saw images of 10 products and answered questions twice—once in a no-label, control condition and then again in a randomly assigned label condition. The relative differences in responses between WLs and TLLs between control and label conditions were estimated using one-way ANOVAs or Chi-square tests. Results: Presenting WLs on products compared to TLLs helped participants: (i) improve their understanding of excess nutrient content (27.0% versus 8.2%, p < 0.001); (ii) improve their ability to identify the healthier product (24.6% versus 3.3%, p < 0.001); (iii) decrease perceptions of product healthfulness; and (iv) correctly identify healthier products (14.0% versus 6.9%, p < 0.001), relative to the control condition. With WLs, there was also an increase in the percentage of people: (v) expressing an intention to purchase the relatively healthier option (16.1% versus 9.8%, p < 0.001); and (vi) choosing not to buy either product (13.0% versus 2.9%, p < 0.001), relative to the control condition. The participants in the WL condition had significantly more favorable opinions of the labels compared to those in the TLL group. Conclusions: WLs would be more effective, compared to the TLL, at improving consumer food choices.
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影响因子：
5.3
作者：
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通讯作者：
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