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Updated: Sep 9, 2025

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食品配送におけるグリーンな食事のためのナッジとブースト戦略の評価:実験的研究
Anne Marlen Hess1, Milan Tatic1, Jeanette Klink-Lehmann1
1Institute for Food and Resource Economics, Chair of Agricultural and Food Market Research, University of Bonn, Nussallee 19, 53115 Bonn, Germany.
Appetite
|September 3, 2025
まとめ
"デフォルト+"ドッジは,シミュレートされた環境で食事のCO2排出量を減少させたが,効果は持続しなかった. 強化は最小限の効果を示し,いかなる介入も持続可能な消費に対する消費者の責任を高めなかった.
科学分野:
- 環境心理学
- 行動経済学
- 持続可能な食糧システム
背景:
- 世界的な食糧システムは 温室効果ガスの排出に大きく貢献しており 気候変動の緩和のために 食事の転換が必要になっています
- Nudgesは選択に影響を与えますが,自律性や持続的な変化についての懸念を提起します. ブースターは消費者の能力を高めることを目的としています.
- 特に持続可能な消費に対する消費者責任 (CRSC) に関する,ドッジとブーストの比較研究は限られている.
研究 の 目的:
- "デフォルト+"の効果と"情報+"の効果を比較する
- 持続可能な消費に対する消費者責任 (CRSC) が介入効果の媒介者としての役割を調査する.
- 持続的な食品選択への介入の持続性を評価する.
主な方法:
- 664人のドイツ人消費者を対象に 食品の配送を模擬した実験です
- 3つの条件 "デフォルト+"のスイッチ "情報+"のスイッチ そして対照群
- 2つの調査波 (介入とフォローアップ) で収集されたデータで,仮説的な食事選択とCO2フットプリントを測定しました.
主要な成果:
- 食事に関連したCO2排出量が 制御群と比較して大幅に減少した.
- CO2排出量への影響は小さく,一貫性も薄かった.
- 追跡調査では,いずれの介入も持続的な効果を示せず,いずれの介入もCRSCを有意に増加させなかった.
結論:
- カーボンフットプリントの削減は可能ですが 長期的な持続可能な消費を促進したり 消費者の責任感を高めることもできません
- この文脈では,排出量を減らすための刺激よりも効果が低いようです.
- 将来の介入は,持続可能な食品選択に対する消費者責任を直接培う戦略を考慮すべきです.
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