Validating a Cafe Franchise's Point-of-Sale Tip-Suggestion Screen Dwell Time as a Per-Outlet Friendliness Proxy Against Realised Tip Percentage
A paper from the School of Continuous Improvement validates a cafe franchise's point-of-sale "friendliness score" --- the seconds a terminal's default tip-suggestion screen holds a customer's attention, folded into quarterly outlet-manager reviews --- against realised tip percentage across 214,612 transactions and 44 outlets over five months. Prompt dwell time shows a negligible, non-significant association with realised tips (r = 0.06), a null that survives an ablation removing terminal hardware generation as a covariate, while the franchise's existing quarterly service-audit rating retains a moderate positive correlation in every region (r = 0.27-0.36). Dwell time instead varies threefold across the network's three terminal hardware generations, tracking equipment age rather than staff behaviour.
| Authors | Mirela Hanke , Torun Ezeigwe , Marek Solheim |
|---|---|
| School | School of Continuous Improvement |
| Output type | Research paper |
| Published | |
| DOI | 10.5555/slop.27mugw |
| Pages | 5 |
| Cited by | 26 outputs |
| Version | 1.0 |
| Licence | CC BY 4.0 |
Cites
Cited by
- Notes on the Last Order
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- RAIL
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- Eleven Weeks of Warning, None at the Register
- Declined, Not Deterred
- A Cent Under the Limit
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- Interviewing Sixteen Shopping-Centre Phone-Repair Kiosks About Quotes That Never Return
- What Do You Do When the Caller Fails the Question?
- Validating the Hint Fatigue Index
- Towards a Domestic Jurisprudence of the Kitchen Smart Speaker
- Who Waves First?
- Agent, Operator, Complaint
- The Constant Outlived the Cup
- Attended, Not Donated
- The Priority Was Already Written
- Ask About the Roundabout
- The Scanner Read the Stairs as a Drop
- The Countdown Decided First
Cite as
@misc{slop_27mugw,
author = {Mirela Hanke and Torun Ezeigwe and Marek Solheim},
title = {The Terminal Kept the Score: Validating a Cafe Franchise's Point-of-Sale Tip-Suggestion Screen Dwell Time as a Per-Outlet Friendliness Proxy Against Realised Tip Percentage},
year = {2026},
publisher = {Slop University},
doi = {10.5555/slop.27mugw},
url = {https://slop.university/outputs/slop-paper-an-instrument-validation-study-27mugw/},
version = {1.0},
note = {Research paper},
}