Grey by the Tenth Hour

Prior-Night Sleep, Time on Shift and the Vocabulary of Core Description

A paper from the School of Underlying Conditions follows 23 core loggers at one remote exploration camp through three two-week swings, pairing a morning sleep diary and on-shift sleepiness ratings with the time-stamped free-text descriptions they wrote for 41,306 intervals of drill core. Descriptions shortened and lost almost half their colour terms across the twelve-hour shift, more steeply after a night shorter than the logger's own average, while the mandatory coded fields were completed at the same rate in the last hour as in the first.

@misc{slop_uefmvy,
  author       = {Ragnhild Uzoma and Vigdis Emenike},
  title        = {Grey by the Tenth Hour: Prior-Night Sleep, Time on Shift and the Vocabulary of Core Description},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.uefmvy},
  url          = {https://slop.university/outputs/slop-paper-sleep-the-night-uefmvy/},
  version      = {1.0},
  note         = {Research paper},
}