Adherence
Front-of-package Warning Labels (WLs) are significantly more effective than Traffic-Light Labels (TLLs) at improving consumer understanding of nutrient content, identifying healthier products, and shifting purchase intentions toward healthier options or abstinence.
For policymakers and food manufacturers, implementing Front-of-Package Warning Labels (like the 'High in' octagonal signs) is a more effective strategy for improving public health literacy and encouraging healthier purchasing decisions than Traffic-Light Labels. The explicit warning format significantly reduces the ability of consumers to overlook high levels of sugar, sodium, and saturated fat, leading to better product identification and healthier purchase intentions.
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)... 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)... Conclusions: WLs would be more effective, compared to the TLL, at improving consumer food choices.
Why this rating
Randomized controlled experiment with a large, representative sample (n=1607), though conducted in a simulated online environment rather than a real-world grocery store.
Source
Are Front-of-Package Warning Labels More Effective at Communicating Nutrition Information than Traffic-Light Labels? A Randomized Controlled Experiment in a Brazilian Sample
Neha Khandpur et al. · Nutrients · 2018
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