Using social norm nudges in supermarket shopping trolleys to increase fruit and vegetable purchases.

IF 2.7 4区 医学 Q3 NUTRITION & DIETETICS Nutrition Bulletin Pub Date : 2023-03-01 DOI:10.1111/nbu.12604
Greg M McGrath
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引用次数: 2

Abstract

Fruit and vegetable (F&V) consumption is associated with a reduced risk of developing obesity and chronic diseases: however, only one in twenty Australian adults consume F&Vs at the recommended two servings of fruit and five servings of vegetables per day. What and how much people eat is influenced by their social and physical environments. Supermarkets are a key setting influencing food purchases, and as such, they can shape consumption patterns of F&Vs. Implementing effective strategies to increase F&V intake is crucial. The objective of this research was to test if shopper purchasing behaviour can be modified to purchase more F&Vs using social norm nudge messages (prompts) placed in shopping trolleys. Placards giving the message that the majority of shoppers purchased F&Vs at each shop were placed in shopping trolleys. Applying an intervention research design, 30 out of ~100 trolleys were fitted with the placards and shopper purchases were measured by collecting receipts to measure the quantity (kg), total and F&V spending (Australian dollars) for intervention versus control trolleys. We also conducted a short intercept survey that was administered independently from the research study day. Shoppers who selected trolleys with the social norm nudge placards (n = 109) purchased 1.25 kg more F&Vs (Intervention: mean = 5.45 kg, SD = 4.23 kg, 95% CI 4.65 kg, 6.26 kg vs. Control: mean 4.19 kg, SD = 3.75 kg, 95% CI 3.48 kg, 4.90 kg, p = 0.020, Cohen's d = 0.32) and spent an extra $9.10 more on F&Vs compared to shoppers in the control group (n = 109; Intervention: mean = $36.20, SD = $26.30, 95% CI = $31.24, $41.26 vs. Control: mean $27.10, SD = $24.00, 95% CI = $22.50, $31.67, p = 0.008, Cohen's d = 0.36). The social norm nudge placard shows promise in modifying shoppers' purchases to buy more F&Vs. Larger studies are required to elucidate and confirm these findings over the longer term.

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在超市购物车中使用社会规范推动来增加水果和蔬菜的购买量。
水果和蔬菜(F&V)的消费与减少患肥胖和慢性疾病的风险有关:然而,只有二十分之一的澳大利亚成年人按照每天推荐的两份水果和五份蔬菜的摄入量食用水果和蔬菜。人们吃什么和吃多少受到社会和物质环境的影响。超市是影响食品购买的关键场所,因此,超市可以塑造食品和餐饮的消费模式。实施有效的策略来增加食品和饮料的摄入量是至关重要的。这项研究的目的是测试购物者的购买行为是否可以通过放置在购物车中的社会规范提示信息来改变,从而购买更多的f&v。每个商店的手推车上都放置了标语牌,上面写着大多数顾客购买了食品和饮料。应用干预研究设计,约100辆手推车中有30辆安装了标牌,通过收集收据来测量干预与控制手推车的数量(公斤),总额和食品和饮料支出(澳元)。我们还进行了一项简短的拦截调查,该调查独立于研究学习日进行。选择带有社会规范轻推牌的手推车的购物者(n = 109)比对照组的购物者多购买1.25公斤的食品和饮料(干预:平均= 5.45公斤,SD = 4.23公斤,95% CI 4.65公斤,6.26公斤,对照组:平均4.19公斤,SD = 3.75公斤,95% CI 3.48公斤,4.90公斤,p = 0.020, Cohen's d = 0.32),并在食品和饮料上多花费9.10美元(n = 109;干预:意味着= 36.20美元,SD = $ 26.30, 95% CI = 31.24美元,41.26美元与控制:意思是27.10美元,SD = $ 24.00, 95% CI = 22.50美元,31.67美元,p = 0.008,科恩的d = 0.36)。社会规范推动广告牌显示出改变购物者购买更多f&v的希望。需要更大规模的研究来阐明和证实这些长期的发现。
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来源期刊
Nutrition Bulletin
Nutrition Bulletin NUTRITION & DIETETICS-
CiteScore
4.50
自引率
12.10%
发文量
58
期刊介绍: The Nutrition Bulletin provides accessible reviews at the cutting edge of research. Read by researchers and nutritionists working in universities and research institutes; public health nutritionists, dieticians and other health professionals; nutritionists, technologists and others in the food industry; those engaged in higher education including students; and journalists with an interest in nutrition.
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