NASA TLX: Software for assessing subjective mental workload
- 1 February 2009
- journal article
- Published by Springer Science and Business Media LLC in Behavior Research Methods
- Vol. 41 (1), 113-117
- https://doi.org/10.3758/brm.41.1.113
Abstract
The NASA Task Load Index (TLX) is a popular technique for measuring subjective mental workload. It relies on a multidimensional construct to derive an overall workload score based on a weighted average of ratings on six subscales: mental demand, physical demand, temporal demand, performance, effort, and frustration level. A program for implementing a computerized version of the NASA TLX is described. The software version assists in simplifying collection, postprocessing, and storage of raw data. The program collects raw data from the subject and calculates the weighted (or unweighted) workload score, which is output to a text file. The program can also be tailored to a specific experiment using a simple input text file, if desired. The program was designed in Visual Studio 2005 and is capable of running on a Pocket PC with Windows CE or on a PC with Windows 2000 or higher. The NASA TLX program is available for free download.Keywords
This publication has 12 references indexed in Scilit:
- A self-analysis of the NASA-TLX workload measureErgonomics, 2007
- Does variation in workload affect fatigue in a regular 12-hour shift system?Sleep and Biological Rhythms, 2007
- Automatic-Controlled Information Processing and Error Detection in a Simulated Pharmacy-Verification TaskPerceptual and Motor Skills, 2003
- Multivariate workload evaluation combining physiological and subjective measuresInternational Journal of Psychophysiology, 2001
- Design of automation for telerobots and the effect on performance, operator situation awareness, and subjective workloadHuman Factors and Ergonomics in Manufacturing & Service Industries, 2000
- User required information modality and structure of in-vehicle navigation system focused on the urban commuterComputers & Industrial Engineering, 1997
- Equivalence of computerized and paper-and-pencil cognitive ability tests: A meta-analysis.Psychological Bulletin, 1993
- Comparison of Four Subjective Workload Rating ScalesHuman Factors: The Journal of the Human Factors and Ergonomics Society, 1992
- Development of NASA-TLX (Task Load Index): Results of Empirical and Theoretical ResearchPublished by Elsevier BV ,1988
- Properties of Workload Assessment TechniquesPublished by Elsevier BV ,1988