A Regression-Discontinuity Estimate of Basket Padding at a Supermarket Chain's Contactless Payment Ceiling
A research poster from the School of Continuous Improvement applies a regression-discontinuity design to a supermarket chain's self-checkout fleet, finding transaction-value density clustering sharply below the contactless-to-PIN payment ceiling with no matching shift in checkout dwell time or scanned item count, and reports the chain piloting a basket-nudging prompt script at the line.
| Authors | Ingeborg Nwachukwu , Mirela Hanke , Renke Sabel |
|---|---|
| School | School of Continuous Improvement |
| Output type | Research poster |
| Published | |
| DOI | 10.5555/slop.h2k3m6 |
| Pages | 1 |
| Cited by | 31 outputs |
| Version | 1.0 |
| Licence | CC BY 4.0 |
Cites
Cited by
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- TIER
Cite as
@misc{slop_h2k3m6,
author = {Ingeborg Nwachukwu and Mirela Hanke and Renke Sabel},
title = {A Cent Under the Limit: A Regression-Discontinuity Estimate of Basket Padding at a Supermarket Chain's Contactless Payment Ceiling},
year = {2026},
publisher = {Slop University},
doi = {10.5555/slop.h2k3m6},
url = {https://slop.university/outputs/slop-poster-exploiting-a-supermarket-h2k3m6/},
version = {1.0},
note = {Research poster},
}