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This paper presents a descriptive analysis of over 1000 global NASA Task Load Index (TLX; Hart & Staveland, 1988) scores from over 200 publications. This analysis is similar to that which was suggested by Hart (2006). The frequency distributions and measures of central tendency presented will aid practitioners in understanding global NASA-TLX scores observed in system tests.
Rebecca A. Grier (Tue,) studied this question.
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