by Carol Righi

Leider ist der Eintrag nur auf Amerikanisches Englisch verfügbar. [(English) Read More]

by Bill Albert, James R. (Jim) Lewis, Ph.D

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 […] [(English) Read More]

by Gerry Gaffney

Introduction For those working in UX through the past several years, the shift from desktop to mobile has seemed a major event. No longer are our devices clearly situated. Instead they travel with us. “Technology is now an appendage—always available in every moment of time, anywhere” (Holtzblatt & Beyer, 2017, p. 7). The shift has […] [(English) Read More]

by Philip Kortum, PhD

Introduction The human factors and usability community has contributed greatly to the safety, usability, and general acceptance of systems over the last 70 years. The tireless work of countless researchers and practitioners has had a significant positive impact on society. Although there are untold numbers of success stories where human factors and usability professionals have […] [(English) Read More]

by Bernard Rummel

Abstract Weibull analysis is an established method in technical reliability analysis for describing and analyzing the lifetime of technical parts. This paper describes the approach and demonstrates its application on task completion times from small-sample usability tests. Fitting a Weibull distribution model to observed data lets the analyst estimate task completion rates for any given […] [(English) Read More]

by James R. (Jim) Lewis, Ph.D, Oğuzhan Erdinç

Abstract There is a large body of work on the topic of the optimal number of response options to use in multipoint items. The takeaways from the literature are not completely consistent, most likely due to variation in measurement contexts (e.g., clinical, market research, psychology) and optimization criteria (e.g., reliability, validity, sensitivity, ease-of-use). There is […] [(English) Read More]

by Mehmet Ilker Berkman, Dilek Karahoca

Abstract Usability Metric for User Experience (UMUX) and its shorter form variant UMUX-LITE are recent additions to standardized usability questionnaires. UMUX aims to measure perceived usability by employing fewer items that are in closer conformance with the ISO 9241 definition of usability, while UMUX-LITE conforms to the technology acceptance model (TAM). UMUX has been criticized […] [(English) Read More]