Fatigue Instantaneous Self-Assessment (F-ISA): Development of a Short Mental Fatigue Rating

Abstract

In this document we present a new fatigue self-assessment questionnaire. The rationale for the development of this fatigue questionnaire is based on the fact that the currently available instruments are either developed for medical purposes, focussing more on sleepiness than on fatigue or interfere with the main experimental task. A brief review of existing instruments is given and the newly developed Fatigue Instantaneous Self-Assessment (F-ISA) is presented. The F-ISA is an easy to administer one item self-report questionnaire, which is non-intrusive and has high face validity. We recommend using this questionnaire in studies conducted in the Institute of Flight Guidance to gain more insight into the interaction of fatigue with other cognitive states such as mental workload or situation awareness.