Date of Award


Degree Type


Degree Name

Master of Science (MS)


Kinesiology and Health Science

Committee Chair(s)

Brennan Thompson (Committee Chair)


Brennan Thompson


Talin Louder


Ray Joslyn


The purpose of this study was to evaluate the reliability of many variables in the 5-minute Psychomotor Vigilance Test (PVT). Many studies have looked at the validity of a 5-minute PVT, but few so far have looked at reliability. For this study, 13 adult females who worked 12-hr shifts were recruited to complete a two trial day study. The first trial day, the subjects submitted health questionnaire followed by a self-reported sleepiness scale and then a 5-minute PVT. The second trial session the subjects only competed the sleepiness scale followed by the 5-minute PVT. After analyzing the data, it was found that the fastest 10% of reaction time (F10RT%) and the mean reaction time (MRT) were the 2 most reliable variables based upon their ICC scores. The self-reported sleepiness scale showed moderate reliability and a mirroring effect in the subjects' PVT outcomes. Overall, the 5-minute PVT is a reliable tool to use to measure fatigue levels in female adult shift workers.