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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Can carbon labels encourage green food choices?
Authors: Kühne, Swen J.
Reijnen, Ester
Laasner Vogt, Lea
Baumgartner, Melanie
et. al: No
DOI: 10.3389/fpsyg.2022.902869
Published in: Frontiers in Psychology
Volume(Issue): 13
Issue: 902869
Issue Date: 2023
Publisher / Ed. Institution: Frontiers Research Foundation
ISSN: 1664-1078
Language: English
Subjects: Food product choice; Carbon label; CO2e emission; Sustainability; Label design
Subject (DDC): 158: Applied psychology
338.927: Environmental economics and sustainable development
Abstract: Introduction: A conventionally grown kiwi from Spain or an organic pineapple from Ghana? Which is the more environmentally friendly option? Given that the production and distribution of food is responsible for about a quarter of our CO2e emissions and thus plays a role in climate change the answer to such questions and, accordingly, making the right food product choices is crucial. The problem, however, is that it is difficult for consumers to calculate the CO2e value of food as it depends on several specifications such as the type of food, origin, etc. Could carbon labeling of food circumvent this problem and help consumers make more environmentally friendly choices? Methods: In an online experiment, 402 participants had to choose 20 food products from a fictitious online shop. The participants were randomly assigned to either one of three food labeling conditions (Star Rating, Green Foot, and Traffic Light Label, short TLL) or the control condition. Results: The labeling conditions resulted in lower overall CO2e emissions, the purchase of more green food products and fewer red food products than in the control condition. The TLL outperformed the other two labels and was also the most accepted. Discussion: The carbon TLL is therefore a promising intervention to help consumers to not only choose more environmentally friendly foods, but also make a significant contribution to the fight against climate change.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Applied Psychology
Organisational Unit: Psychological Institute (PI)
Appears in collections:Publikationen Angewandte Psychologie

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Kühne, S. J., Reijnen, E., Laasner Vogt, L., & Baumgartner, M. (2023). Can carbon labels encourage green food choices? Frontiers in Psychology, 13(902869).
Kühne, S.J. et al. (2023) ‘Can carbon labels encourage green food choices?’, Frontiers in Psychology, 13(902869). Available at:
S. J. Kühne, E. Reijnen, L. Laasner Vogt, and M. Baumgartner, “Can carbon labels encourage green food choices?,” Frontiers in Psychology, vol. 13, no. 902869, 2023, doi: 10.3389/fpsyg.2022.902869.
KÜHNE, Swen J., Ester REIJNEN, Lea LAASNER VOGT und Melanie BAUMGARTNER, 2023. Can carbon labels encourage green food choices? Frontiers in Psychology. 2023. Bd. 13, Nr. 902869. DOI 10.3389/fpsyg.2022.902869
Kühne, Swen J., Ester Reijnen, Lea Laasner Vogt, and Melanie Baumgartner. 2023. “Can Carbon Labels Encourage Green Food Choices?” Frontiers in Psychology 13 (902869).
Kühne, Swen J., et al. “Can Carbon Labels Encourage Green Food Choices?” Frontiers in Psychology, vol. 13, no. 902869, 2023,

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