气候变化领域集成服务门户(CCPortal): Pledging after nudging improves uptake of plant-based diets: a field experiment in a German university cafeteria

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DOI	10.1088/2515-7620/ad2625
	Pledging after nudging improves uptake of plant-based diets: a field experiment in a German university cafeteria
	Thamer, Philipp; Banerjee, Sanchayan; John, Peter
发表日期	2024
ISSN	2515-7620
起始页码	6
结束页码	2
卷号	6 期号:2
英文摘要	Meat-based diets are carbon-intensive and incompatible with Paris climate targets. Reducing meat consumption is essential to mitigate climate change. Behavioural nudges, which present structured choices to citizens, have been increasingly used to reduce meat demand. But they face ethical challenges and limits when scaling up. We test if encouraging people to reflect after nudging improves the effectiveness of a nudge. We design and administer a novel randomised controlled trial in a German university cafeteria, lasting for five weeks (N participants = 129,N meals = 645). In week 1, we measure baseline dietary behaviours. In week 2, we introduce a labelling nudge in the cafeteria. Subsequently, in weeks 3 & 4, we assign participants randomly to three experimental conditions: a control group that continues to receive the labelling nudge and two treatment groups that get the labelling nudge with an opportunity to reflect, either on the nudge (nudge+ 1) or their own preferences (nudge+ 2). All treatments are discontinued in week 5. In the pooled sample, controlling for period fixed effects, we find that the labelling nudge is not associated with meaningful changes in meat-demand over time. Nonetheless, being encouraged to reflect reduces meat-demand significantly compared to the nudge-the nudge+ 1 reduces chances of buying a meat-based item in the cafeteria by 5% (mu = -0.25, 95% CI = [-0.49,-0.36]) whereas the nudge+ 2 reduces it by 7% (mu = -0.35, 95% CI = [-0.61,-0.08]). These treatment effects attenuate when the interventions are discontinued. We recommend that combining reflection with nudging can improve the uptake of climate-friendly diets, at least in the short-term.
英文关键词	Nudge; Nudge plus; randomised controlled trial; sustainable diets
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001170304400001
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300298
作者单位	WHU - Otto Beisheim School of Management; Netherlands Cancer Institute; University of London; King's College London
推荐引用方式 GB/T 7714	Thamer, Philipp,Banerjee, Sanchayan,John, Peter. Pledging after nudging improves uptake of plant-based diets: a field experiment in a German university cafeteria[J],2024,6(2).
APA	Thamer, Philipp,Banerjee, Sanchayan,&John, Peter.(2024).Pledging after nudging improves uptake of plant-based diets: a field experiment in a German university cafeteria.ENVIRONMENTAL RESEARCH COMMUNICATIONS,6(2).
MLA	Thamer, Philipp,et al."Pledging after nudging improves uptake of plant-based diets: a field experiment in a German university cafeteria".ENVIRONMENTAL RESEARCH COMMUNICATIONS 6.2(2024).