User Experience Research & Software. Tweets by Jeff Sauro, Jim Lewis & MeasuringU Team: Authors of Quantifying the User Experience 8 Other UX Books.

Joined January 2010
22,093 Photos and videos
We found that neither scale format (numeric vs. slider) nor device (desktop vs. mobile) strongly affected Likelihood-to-Recommend rating behaviors. measuringu.com/ltr-numeric-s…
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We applied three estimation methods to two sets of data to see which of them best matched concurrently collected UX-Lite™ and SUS scores. measuringu.com/accuracy-of-s…
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Choosing a method is the first big decision when conducting #UXresearch. Picking your variables is the next important decision. measuringu.com/understanding…
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The inverse square relationship for the drop in intensity as you move away from an energy source is analogous to the drop in precision that occurs when sample sizes are smaller. measuringu.com/inverse-squar…
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Probably most of us who have taken an introductory statistics class have heard the rule of thumb that your sample size should be at least 30. But is that right? measuringu.com/do-statistics…
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How Does Statistical Hypothesis Testing Work? measuringu.com/how-does-hypo…
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It took users more than twice as long to answer the same ten SUS items when they were presented alone versus in a grid. measuringu.com/grids-respons…
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Revisiting the Evidence for the Left-Side Bias in Rating Scales. measuringu.com/revisiting-th…
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We’ve worked out “magic ranges” for sample sizes for #UX discovery, estimation, and comparison studies. measuringu.com/might-not-be-…
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From WOPR to HAL 9000, synthesized speech has evolved; here’s how to measure its quality. measuringu.com/voice-interac…
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The UX-Lite is a two-item standardized questionnaire adapted from the UMUX-Lite. In this article, we trace the evolution of the UX-Lite starting from two standardized questionnaires created in the mid-1980s. measuringu.com/evolution-of-…
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Is it realistic to expect consistency in #usability problem discovery? Is consistency in problem discovery necessary for usability testing to be effective? measuringu.com/testing-effec…
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Are three-point scales really better than scales with more points? measuringu.com/three-points/
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You might have heard of the “magic number 5,” but what about the “magic number 30”? measuringu.com/do-statistics…
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Short words and sentences are generally easier to understand than long ones, so we checked if changing the perceived usefulness item of the UMUX-Lite from 13 to 8 syllables affected its measurement properties. The simple version worked just as well. measuringu.com/simpler-umux-…
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It is important for companies to track negative word of mouth, so we reviewed data in the relevant literature to understand whether the Net Promoter Score adequately measures recommending against a company. measuringu.com/does-the-nps-…
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Does adding a third dimension to bar charts affect how quickly people can compare bar heights? It does a little, but it has a powerful effect on preference—and maybe not in the way you might expect. measuringu.com/are-3d-bar-gr…
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Do you need to test at least 30 users in #UXresearch? Is that even the right question? measuringu.com/do-statistics…
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Using “will recommend” instead of “would recommend” resulted in slightly higher scores, but the result was statistically significant for only one of four brands in our study. measuringu.com/will-would
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