Katare Bhagyashree, Zhao Shuoli
Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907.
Department of Agricultural Economics, University of Kentucky, Lexington, KY 40546.
Proc Natl Acad Sci U S A. 2024 Dec 10;121(50):e2319018121. doi: 10.1073/pnas.2319018121. Epub 2024 Dec 2.
Encouraging consumption of plant-based food products can help mitigate the impact of dietary choices on climate change. Research suggests that modifying environments in which people make purchasing decisions has the potential to achieve behavioral changes toward sustainable consumption. We examine the impact of two behavioral interventions, carbon footprint labeling, and product categorization, to promote sustainable food selection in an online grocery shopping environment. Online grocery shopping data collected from 2,359 US participants show that carbon footprint labels increased the selection of plant-based food products by 37% and categorization increased it by 25%. A combination of both nudges increased plant-based food selection by 32%. Participants underestimated the environmental impact of different types of foods despite exposure to carbon footprint information. As the global market for online grocery shopping continues to grow, this study presents a potential for simple and scalable interventions in online shopping environments to encourage sustainable choices.
鼓励食用植物性食品有助于减轻饮食选择对气候变化的影响。研究表明，改变人们做出购买决策的环境有可能实现向可持续消费的行为转变。我们研究了两种行为干预措施，即碳足迹标签和产品分类，以促进在线杂货购物环境中的可持续食品选择。从2359名美国参与者收集的在线杂货购物数据显示，碳足迹标签使植物性食品的选择增加了37%，产品分类使其增加了25%。两种助推措施相结合使植物性食品的选择增加了32%。尽管接触了碳足迹信息，但参与者低估了不同类型食品对环境的影响。随着在线杂货购物的全球市场持续增长，本研究提出了在在线购物环境中进行简单且可扩展的干预措施以鼓励可持续选择的可能性。
