The Loyalty Screen as a Spending Nudge

A research poster from the School of Emergent Priorities randomises whether a supermarket EFTPOS screen shows a shopper's loyalty-points balance before or after payment completes, finding no difference in basket-amendment value or incidence across 4,118 transactions at fourteen sites. The Horizon Register drops the prompt from its watch-list and orders partner sites to withdraw marketing language the trial could not support.

@misc{slop_jdanbw,
  author       = {Tove Ilesanmi and Verity Marris},
  title        = {The Loyalty Screen as a Spending Nudge},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.jdanbw},
  url          = {https://slop.university/outputs/slop-poster-does-displaying-a-jdanbw/},
  version      = {1.0},
  note         = {Research poster},
}