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纠正消费者对二氧化碳排放的误判

Correcting Consumer Misperceptions about CO 2 Emissions
Journal of the Association of Environmental and Resource Economists · 2026 · Taisuke Imai、Davide D. Pace、Peter Schwardmann、Joël J. van der Weele

中文摘要

政策制定者常常倡导提供有关碳影响的信息,其前提是消费者愿意减排,但对如何减排知之甚少。我们对该论点进行了实证检验,并予以否定。我们收集了一个大规模的新数据集,发现消费者对不同消费行为的碳影响存在严重误判,同时也明确表现出减排偏好。然而,在两项独立的实验中,我们表明在大规模代表性样本中纠正信念对消费没有影响。我们的零结果具有充足的统计功效且富有信息量,因为我们针对信息设置了以实现最大效应。这些结果对将纠正碳足迹误判作为应对气候变化的工具的可能性提出了质疑。

Abstract

Policymakers frequently champion information provision about carbon impact on the premise that consumers are willing to mitigate their emissions but are poorly informed about how to do so. We empirically test this argument and reject it. We collect an extensive new dataset and find both large misperceptions of the carbon impact of different consumption behaviors and clear preferences for mitigation. Yet, in two separate experiments, we show that correcting beliefs has no effect on consumption in large representative samples. Our null results are well powered and informative, as we target information for maximal impact. These results call into question the potential of correcting carbon footprint misperceptions as a tool to fight climate change.
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