炭素保証は企業のグリーンウォッシングを抑止するか
Does carbon assurance deter corporate greenwashing? (原題)
Md Safiullah, Linh Thi My Nguyen, Angel Zhong
🤖 gxceed AI 要約
日本語
本論文は、第三者による炭素保証が企業のグリーンウォッシングを抑止するかを、2007〜2020年の米国上場企業2,276社・年データで検証した。ESG開示とESG実績の乖離をグリーンウォッシングと定義し、炭素保証がこれを低減することを示す。環境イノベーションが媒介経路であり、効果はRGGI非加盟州や競争が緩い市場でより強い。保証の水準・比率でも頑健な結果が得られている。
English
Using 2,276 US listed firm-year observations (2007–2020), this study tests whether third-party carbon assurance curbs greenwashing, measured as the gap between ESG disclosure and ESG performance. Carbon assurance reduces greenwashing, supporting monitoring and signalling roles, with environmental innovation as the mediating channel. Effects concentrate in non-RGGI states and less competitive product markets, and are robust to endogeneity tests, especially for assurance level and percentage.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
SSBJ基準の適用と有報でのサステナビリティ開示が進む日本では、保証の範囲・水準をどう設計するかが実務課題となる。本論文は、保証が形式化(シンボリックな正当化)に陥るリスクと、実質的な行動変容を促す条件を示唆し、日本企業の保証導入判断や投資家の信頼性評価に資する。
In the global GX context
As ISSB/CSRD and SEC climate disclosure move toward mandatory assurance, this paper offers large-scale evidence that assurance narrows the disclosure–performance gap rather than merely conferring symbolic legitimacy. It informs regulators weighing mandatory carbon assurance and investors assessing environmental credibility, and highlights environmental innovation as the transmission channel.
👥 読者別の含意
🔬研究者:保証とグリーンウォッシングの因果関係、および環境イノベーションを媒介経路とする点を実証的に示す基準研究として参照できる。
🏢実務担当者:炭素保証の導入が開示の信頼性向上とイノベーション促進に繋がる可能性を、保証範囲の設計判断に活用できる。
🏛政策担当者:炭素保証の義務化を検討する際、保証水準や比率の設計が抑止効果に与える影響を根拠として参照できる。
📄 Abstract(原文)
Purpose This paper investigates whether third-party carbon assurance deters corporate greenwashing. Motivated by competing theoretical perspectives, where assurance may either enhance accountability or provide symbolic legitimacy, we examine whether carbon assurance aligns firms' environmental disclosures with their actual performance. Design/methodology/approach Using 2,276 US publicly listed firm-year observations from 2007–2020, we analyse the association between carbon assurance and greenwashing, measured as the divergence between ESG disclosure and ESG performance. Findings Carbon assurance reduces greenwashing, supporting its monitoring and signalling roles. We document that environmental innovation is a channel for this relationship: carbon assurance is associated with greater environmental innovation, which in turn lowers greenwashing. The effect is concentrated in non-RGGI states and is stronger in less competitive product markets. The results are robust across alternative specifications and endogeneity tests, particularly for assurance level and percentage. Originality/value This study provides the first large-scale evidence that carbon assurance effectively curbs corporate greenwashing and identifies environmental innovation as the key mechanism. The findings inform regulators considering mandatory carbon assurance, and assist investors and creditors evaluating firms' environmental credibility.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1108/ijmf-01-2026-0066first seen 2026-11-06 04:57:43
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