Different equations used during the mental workload evaluation applying the Nasa-TLX method

Abstract

The objectives of the research were to identify the different equations used during the evaluation of mental workload with the NASA Task Load Index (TLX) and to compare the results achieved with the different equations. A survey consisted of 21 questions was administered to 120 students from the Autonomous University of Ciudad Juarez using the four different equations identified. The scores of the dimensions and the Global Workload Index (GWI) showed differences in the results between the equations employed in this research.