Author
Listed:
- Ahmad Zia Wahdat
- Jayson L. Lusk
AbstractGrocery stockpiling is a common behavioral response to the emergence of disasters or heightened uncertainty. Nonetheless, the phenomenon and methods for mitigating it are not well understood. Using a model of household shopping and inventory management, we conceptualize stockpiling as a result of an increase in the fixed cost of making grocery shopping trips, or the opportunity cost of time associated with shopping. In a laboratory experiment, we find that stockpiling increases (decreases) by 78 and 41% (22%) with an increase in fixed costs and price reductions (imposition of purchase limits), respectively. We also find that stockpiling leads to fewer (more) grocery trips by 33 and 22% (36%) under the same three conditions, respectively. Our experiment and subsequent cluster analysis suggest that loss aversion suppresses stockpiling. Our experiment shows that imposing purchase limits, a common retail response to stock‐outs, can trigger stockpiling during shopping trips without purchase limits. Although we do not claim external validity, our study suggests that store managers and policymakers should be careful about solutions during a stockpiling event, such that they do not exacerbate stockpiling, which may disproportionately affect vulnerable groups and disrupt supply chains. L'accumulation de provisions est une réponse comportementale courante face à l'apparition de catastrophes ou à une incertitude accrue. Néanmoins, ce phénomène, ainsi que les méthodes pour l'atténuer, sont mal compris. En utilisant un modèle de gestion des courses et des stocks ménagers, nous conceptualisons l'accumulation de provisions comme le résultat d'une augmentation du coût fixe des déplacements pour faire les courses, ou du coût d'opportunité lié au temps consacré aux courses. Dans une expérience en laboratoire, nous constatons que l'accumulation de provisions augmente (diminue) de 78 %, 41 % (22 %) avec une augmentation des coûts fixes, des réductions de prix (imposition de limites d'achat), respectivement. Nous observons également que l'accumulation de provisions entraîne une diminution (augmentation) des déplacements pour faire les courses de 33 %, 22 % (36 %) dans les mêmes trois conditions, respectivement. Notre expérience et l'analyse en clusters qui en découle suggèrent que l'aversion à la perte réduit en réalité l'accumulation de provisions. Notre expérience montre que l'imposition de limites d'achat, une réponse courante des détaillants face aux ruptures de stock, peut déclencher l'accumulation de provisions lors des courses sans limites d'achat. Bien que nous ne revendiquions pas de validité externe, notre étude suggère que les gestionnaires de magasins et les décideurs politiques doivent faire preuve de prudence dans leurs solutions pendant un événement d'accumulation de provisions, afin de ne pas l'aggraver, ce qui pourrait affecter de manière disproportionnée les groupes vulnérables et perturber les chaînes d'approvisionnement.
Suggested Citation
Ahmad Zia Wahdat & Jayson L. Lusk, 2025.
"Understanding the determinants of consumer grocery stockpiling behavior,"
Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 73(1), pages 17-31, March.
Handle:
RePEc:bla:canjag:v:73:y:2025:i:1:p:17-31
DOI: 10.1111/cjag.12379
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