This study by Patrick Sherry, PhD, of the University of Denver examined a new measure of fatigue, the AlertMeter®.
Among other conclusions, “The AlertMeter® demonstrated strong validity as a measure of fatigue. It demonstrated significant concurrent validity with the psychomotor vigilance test (PVT) and self-ratings of fatigue (KSS). Overall, the AlertMeter® is an effective and valid tool for detecting fatigue.”
Get the full study here.