The use of feedback to enhance environmental outcomes: a randomised controlled trial of a food waste scheme

The use of feedback to enhance environmental outcomes: a randomised controlled trial of a food waste scheme
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利用反馈来改善环境结果:食物浪费计划的随机对照试验

DOI:
10.1080/13549839.2011.586026
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发表时间:
2011
期刊:
影响因子:
2.4
通讯作者:
Nomura H
Nomura H
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Nomura H

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在英国,食物垃圾占每年进入垃圾填埋场的一般垃圾的20%左右。鼓励公众参与食物垃圾回收并将更多食物与一般垃圾分开可以帮助地方政府促进更好的环境。呼吁集体规范,通过给人们反馈他们街道的食物垃圾回收率与其他街道相比,可以促进回收。为了验证这一点,我们在大曼彻斯特的奥尔德姆进行了一项随机对照试验。我们将318条街道随机分配到治疗组和对照组。处理组的家庭收到了两张明信片,提供了他们所在街道在食物垃圾回收方面的表现与他们所在社区的平均水平相比的反馈。在三种情况下对所有家庭参与食物浪费计划的情况进行了测量:在基线时,以及在收到第一和第二反馈卡后。我们使用交叉分类的多水平逻辑回归模型估计我们的治疗效果,控制基线,街道大小和治疗与基线的相互作用。我们发现,反馈对食物垃圾的参与产生了积极的影响,与未接受治疗的对照组相比,效应量为2.8%。
Food waste makes up about 20% of general waste that goes to the landfill every year in the UK. Encouraging the public to engage in food waste recycling and separating more food from general waste could help local governments promote a better environment. Appeals to collective norms, by giving people feedback on their street's food waste recycling rate compared with others, could promote recycling. To test this, we carried out a randomised controlled trial in Oldham, Greater Manchester. We randomly assigned 318 streets to a treatment and control group. Households in the treatment group were sent two postcards that provided feedback on how their street performed on food waste recycling compared with the average for their neighbourhood. Participation in the food waste scheme was measured for all households on three occasions: at baseline, and after the receipt of the first- and second-feedback cards. We estimated the effect of our treatment using cross-classified multilevel logistic regression models, controlling for baseline, street size and the interaction of treatment and baseline. We show that feedback had a positive effect on the food waste participation with an effect size of 2.8% compared with a control group that received no treatment.
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