T22 - Assessing User Experience (UX) with Two Items: The UMUX-LITE

Sunday, 28 July 2019, 13:30 – 17:30
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James R. Lewis (short bio)

IBM Corporation, United States



The purpose of this course is to provide an introduction to the UMUX-LITE, a relatively new UX questionnaire that contains just two items focused on the core issues of perceived usefulness and perceived ease-of-use. This introduction will include background on standardized usability measurement, where the UMUX-LITE came from, the research supporting its use as a measure of UX in research and applied UX work, and how to analyze UMUX-LITE data. At the end of the course, attendees will know the history of the UMUX-LITE, how to use it in current work, and where future research is likely to go.


Content and Benefits:

The course starts with coverage of the basic psychometric properties of standardized measurement – reliability, validity, and sensitivity. The next topic is a brief review of the inventory of post-study questionnaires. This will lead into a theoretical discussion of the statistical connections between the UMUX-LITE, the System Usability Scale, and the Technology Acceptance Model. From here, the tutorial moves to the practical use of the UMUX-LITE through data analysis/interpretation and numerous quantitative exercises. After completing this course, attendees will have a firm foundation in why and how to use the UMUX-LITE.

  1. Introduction to standardized usability measurement
    1. What is usability?
    2. What is a standardized questionnaire?
    3. Advantages of standardized usability questionnaires
    4. What standardized usability questionnaires are available?
    5. Assessing the quality of standardized questionnaires
  2. The history of the UMUX-LITE
    1. Where did the UMUX-LITE come from?
    2. What research supports the use of the UMUX-LITE as a measure of user experience?
  3. How to use the UMUX-LITE
    1. Basic statistical review
    2. Comparing UMUX-LITE scores (including quantitative exercises)
    3. Computing confidence intervals (including quantitative exercises)
    4. Interpreting UMUX-LITE scores (including quantitative exercises)
  4. The future of the UMUX-LITE
    1. Research
    2. Practice
  5. Wrapping up


Target Audience:

The course will likely be of interest to a wide variety of attendees, but will be especially useful to those usability practitioners and HCI researchers who need a very concise standardized measure of user experience. Attendees should bring computers with spreadsheet software to work through the quantitative exercises.

Bio Sketch of Presenter:

Dr. James R. (Jim) Lewis, Ph.D., CHFP
James R. (Jim) Lewis graduated with an M.A. in Engineering Psychology in 1982 from New Mexico State University, and received his Ph.D. in Experimental Psychology (Psycholinguistics) from Florida Atlantic University in 1996. He has worked as a human factors engineer and usability practitioner at IBM since 1981. He has published influential research on the measurement of perceived usability, use of confidence intervals, and sample size estimation for usability studies. He is co-editor in chief of the Journal of Usability Studies, on the editorial boards of the International Journal of Human-Computer Interaction and Voice Interaction Design, and wrote the chapter on usability testing for the 3rd and 4th editions of the Handbook of Human Factors and Ergonomics (2006/2012). He is the author of "Practical Speech User Interface Design" (2011) and co-author (with Jeff Sauro) of "Quantifying the User Experience" (2012/2016). He is a BCPE Certified Human Factors Professional, an IBM Master Inventor with 91 US patents issued to date, a member of the Human Factors and Ergonomics Society, the User Experience Professionals Association, and a member and past-president of the Association for Voice Interaction Design.