The National Aviation and Space Agency Task Load Index (NASA-TLX): Does it Need Updating?

Autor:	William S. Helton, Kenneth M. Jackson, Katharina Näswall, Bonnie Humphrey
Rok vydání:	2022
Předmět:	Medical Terminology Medical Assisting and Transcription
Zdroj:	Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 66:1245-1249
ISSN:	1071-1813 2169-5067
Popis:	The NASA-TLX is arguably the most widely used self-report measure of workload in the field of Human Factors and Ergonomics. Previous research utilizing factor analysis has indicated it may not actually be a good unitary measure of workload. In the present study, we have modified two of the original six items, Frustration and Performance, to better reflect workload by replacing them with Emotional Demand and Performance Monitoring Demand items. Confirmatory factor analyses indicate the new scale is an improvement but Physical Demand should also be considered for removal; this results in a five-item measure of mental workload, not overall task workload, as physical demands may not be meaningfully combinable with cognitive demands.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ac19bd92727151f179b3123b966dbb50 https://doi.org/10.1177/1071181322661370 Zobrazit plný text záznamu