A self-analysis of the NASA-TLX workload measure
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Jan M Noyes1, Daniel P J Bruneau
1Department of Experimental Psychology, University of Bristol, 8 Woodland Road, Bristol BS8 ITN, UK. j.noyes@bristol.ac.uk
Abstract:
Computer use and, more specifically, the administration of tests and materials online continue to proliferate. A number of subjective, self-report workload measures exist, but the National Aeronautics and Space Administration-Task Load Index (NASA-TLX) is probably the most well known and used. The aim of this paper is to consider the workload costs associated with the computer-based and paper versions of the NASA-TLX measure. It was found that there is a significant difference between the workload scores for the two media, with the computer version of the NASA-TLX incurring more workload. This has implications for the practical use of the NASA-TLX as well as for other computer-based workload measures.
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