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
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24 mai 2023
- ISIDORE Id: 10670/1.f09b16...
- halshs: halshs-04160334
- doi: 10.1080/23743603.2023.2214964
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info:eu-repo/semantics/altIdentifier/doi/10.1080/23743603.2023.2214964
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Mots-clés
Behavioral policy Nudge Efficiency Default option Acceptability D - Microeconomics/D.D9 - Intertemporal Choice/D.D9.D91 - Intertemporal Household Choice • Life Cycle Models and SavingSujets proches
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Daniel Priolo 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 », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1080/23743603.2023.2214964
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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.
