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Sources & notes
Lewis, Utesch, and Maher introduced UMUX-Lite in 2013. Fillo preserves its two items and seven-point agreement scale. This is the original UMUX-Lite, not the later five-point UX-Lite variant.
- UMUX-LITE: When there’s no time for the SUSJames R. Lewis, Brian S. Utesch and Deborah E. Maher / CHI · 2013
- Measuring Usability: From the SUS to the UMUX-LiteJeff Sauro, MeasuringU · 2017-10-11
After product use or a usability session. Respondents need enough experience to assess the product.
For two complete answers, score (usefulness + ease − 2) × 100 / 12. Report the mean, sample size, and uncertainty. The result is not a percentage satisfied, a SUS score, or the regression-adjusted UMUX-Lite score.
UMUX-LiteKeep both statements, seven-point agreement scale, and endpoint polarity. Substitute only the product name. Do not merge data with five-point UX-Lite.