@inproceedings{a544c0efbb0e45a4b777085913695848,
title = "Insights in Subjective Sleepiness Scales",
abstract = "Self-evaluation category rating scales are widely used instruments in sleepiness research. They are convenient and offer plenty of economic advantages, but unfortunately, they are also associated with psychometric shortcomings. In order to improve the quality of subjective sleepiness assessment, we propose a modified version of Borgs CR10 scale (Borg, 1998)-the CR10 SR- to measure perceived effort to stay awake. Thirty-six male shift-workers performed a 25 min driving simulator test (DriveSim 3.0) between 5.15 and 6.00 AM after a late-night 7 hour shift. Driving performance was assessed using (1) average speed, (2) speed deviation and (3) accident liability. Situational and global sleepiness were assessed with both the Stanford Sleepiness Scale (SSS) and the Epworth Sleepiness Scale (ESS) whereas situational sleep resistance was assessed with the CR10 SR. No significant differences were found in how well SSS or CR10 SR predict average speed, unless the CR10 SR scores were treated as ordinal data. Finally, it seems that CR10 SR predicts speed deviation and accident liability better than the SSS.",
keywords = "sleepiness, CR-10, Borg scale, shift work",
author = "Olivier Mairesse and Peter Theuns",
note = "J.S. Monahan,S.M. Sheffert, J.T. Townsend; Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet ; Conference date: 21-09-2009 Through 25-09-2009",
year = "2005",
month = oct,
language = "English",
series = "Fechner Day 2005",
publisher = "International Society for Psychophysics",
pages = "181--186",
editor = "J.s. Monahan and S.m. Sheffert and J.t. Townsend",
booktitle = "Fechner Day 2005",
}