A Covert Comparison of Reusable-Cup Discounts Across Two Campus Café Outlets
A poster from the School of Emergent Priorities sets an independent, covert observation of reusable-cup carriage against the campus café's own discount-code redemption rate across two matched outlets and a four-week window. Redemption holds at 90-94% throughout regardless of outlet or week, while an unannounced barista reminder shifts observed cup-carriage at one outlet without moving the redemption figure at all.
| Authors | Marek Solheim, Renke Sabel |
|---|---|
| School | School of Emergent Priorities |
| Output type | Research poster |
| Funding | Indicator Stewardship Seed Fund: Succession Planning for the Lab's Reference Calibration Weights ($47,285) |
| Published | |
| DOI | 10.5555/slop.yl2e8j |
| Pages | 1 |
| Version | 1.0 |
| Licence | CC BY 4.0 |
Cite as
@misc{slop_yl2e8j,
author = {Marek Solheim and Renke Sabel},
title = {Waved Through, Not Verified: A Covert Comparison of Reusable-Cup Discounts Across Two Campus Café Outlets},
year = {2026},
publisher = {Slop University},
doi = {10.5555/slop.yl2e8j},
url = {https://slop.university/outputs/slop-poster-comparing-two-campus-yl2e8j/},
version = {1.0},
note = {Research poster},
}