Volume 13, Issue 1, November 2017

Introduction to Volume 13, Issue 1, November 2017

Bill Albert and James (Jim) R. Lewis

For our November 2017 issue, we start with an invited essay from Bill Gribbons on “Is It Time to Drop the ‘U’ (From UX)?” In this thoughtful and provocative contribution, he argues for and considers the potential consequences of changing the way we refer to our field—specifically, changing from “User Experience” to “Experience Design.” In addition to the editorial, this issue includes three research papers, one on the relationship between […] [Read More]


Invited Essay: Is It Time to Drop the “U” (From UX)?

Bill Gribbons

Yes, I am asking whether it’s time for another name change and a re-thinking of the profession. And yes, I am aware of the upheaval that nearly fractured our community when the shift from usability to user experience was proposed nearly two decades ago. Fully mindful of likely resistance to another change, I am proposing that we drop the user from our name and simply refer to our field and, most […] [Read More]


Predicting Post-Task User Satisfaction With Weibull Analysis of Task Completion Times

Bernard Rummel

Task completion times have been shown to follow Weibull distributions, with parameters reflecting different aspects of the task solution process (Rummel, 2017). The offset time matches UI operation time, including system response time, on the shortest path taken by users (“click time”). The characteristic time describes the solution rate in the stochastic process of users solving a task (“think time”). The shape parameter captures non-stochastic positive or negative influences on user performance (“acceleration”)  […] [Read More]


SUPR-Qm: A Questionnaire to Measure the Mobile App User Experience

Jeff Sauro and Paree Zarolia

In this paper, we present the SUPR-Qm, a 16-item instrument that assesses a user’s experience of a mobile application. Rasch analysis was used to assess the psychometric properties of items collected from four independent surveys (N = 1,046) with ratings on 174 unique apps. For the final instrument, estimates of internal consistency reliability were high (alpha = .94), convergent validity was also high, with significant correlations with the SUPR-Q (.71), UMUX-Lite (.74) […] [Read More]


Can I Leave This One Out? The Effect of Dropping an Item From the SUS

James (Jim) R. Lewis and Jeff Sauro

There are times when user experience practitioners might consider using the System Usability Scale (SUS), but there is an item that just doesn’t work in their context of measurement. For example, the first item is “I think I would like to use this system frequently.” If the system under study is one that would only be used infrequently, then there is a concern that including this item would distort the scores […] [Read More]