Who Sets the Tooth Fairy's Rate?

Nominal rigidity, denomination constraints, and sibling precedent in a decade of household pillow payouts

A research poster from the School of Continuous Improvement reconstructs per-tooth payout histories across 214 households and 1,838 pillow events, modelling the tooth fairy's going rate as an administered price. Payout spells hold for a median 4.8 years with no downward repricing observed; 71% of repricings land exactly one coin or note denomination up, and a district parents' association has since adopted the panel median as its kinder handbook's suggested rate.

@misc{slop_06kohn,
  author       = {Joost Nwosu and Torun Ezeigwe and Mirela Hanke},
  title        = {Who Sets the Tooth Fairy's Rate?: Nominal rigidity, denomination constraints, and sibling precedent in a decade of household pillow payouts},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.06kohn},
  url          = {https://slop.university/outputs/slop-poster-take-the-tooth-06kohn/},
  version      = {1.0},
  note         = {Research poster},
}