Would you like some coffee with your sugar? A natural field experiment on the efficiency and acceptability of setting zero sugars as a default in coffee-vending machines - HAL Accéder directement au contenu
Article dans une revue Comprehensive Results in Social Psychology Année : 2023

Would you like some coffee with your sugar? A natural field experiment on the efficiency and acceptability of setting zero sugars as a default in coffee-vending machines

Résumé

This paper aims to replicate the effect of a nudge on behavior (efficiency) and acceptability in a natural field experiment. The nudge in our study consists in setting zero sugars as the default level of sugar in hot drinks–vending machines in a French university. We compared Campus A (default option set to 0 sugars) to Campus B (default option set to 3 sugars). We measured the efficiency of this default option by observing the level of sugar actually chosen by the participants, and we measured acceptability through a questionnaire. We hypothesized a high level of efficiency for the nudge and a higher acceptability in Campus A (default option set to 0 sugars) compared to Campus B (default option set to 3 sugars). Our results show that participants with the default option set to zero sugars (Campus A) consumed less sugar than those with the default option set to 3 sugars (Campus B). We also found a high level of acceptability on both campuses, though with no difference between Campus A (where the nudge was implemented) and Campus B (where a future nudge would be implemented). The discussion addresses the applied perspectives and ethical implications of these results.
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Dates et versions

halshs-04160334, version 1 (12-07-2023)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification - CC BY 4.0

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Daniel Priolo, Isabelle Milhabet, Marilena Bertolino, Tom Juille, Dorian Jullien, et al.. Would you like some coffee with your sugar? A natural field experiment on the efficiency and acceptability of setting zero sugars as a default in coffee-vending machines. Comprehensive Results in Social Psychology, 2023, https://www.tandfonline.com/journals/rrsp20, 7 (1-2), pp.25-41. ⟨10.1080/23743603.2023.2214964⟩. ⟨halshs-04160334⟩
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