Nasa-Task Load Index (NASA-TLX); 20 Years Later

  title={Nasa-Task Load Index (NASA-TLX); 20 Years Later},
  author={S. G. Hart},
  journal={Proceedings of the Human Factors and Ergonomics Society Annual Meeting},
  pages={904 - 908}
  • S. Hart
  • Published 1 October 2006
  • Computer Science
  • Proceedings of the Human Factors and Ergonomics Society Annual Meeting
NASA-TLX is a multi-dimensional scale designed to obtain workload estimates from one or more operators while they are performing a task or immediately afterwards. The years of research that preceded subscale selection and the weighted averaging approach resulted in a tool that has proven to be reasonably easy to use and reliably sensitive to experimentally important manipulations over the past 20 years. Its use has spread far beyond its original application (aviation), focus (crew complement… 

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