Introduction to Volume 16, Issue 1

Our November 2020 invited essay is “No Interface? No Problem. Applying Human-Centered Design and HCDAgile to Data Projects,” by Carol Righi. The essay describes the insights of a group of human-centered designers, agilists, data scientists, and other technology enablement practitioners who tackled the question of how to apply the principles and practices of human-centered design […] [Read More]

Invited Essay: No Interface? No Problem. Applying Human-Centered Design and HCDAgile to Data Projects

In October 2019, a group of human-centered designers, agilists, data scientists, and other technology enablement practitioners joined to share their thoughts about a topic of common interest: How should the principles and practices of human-centered design, Agile development, and the overarching process of HCDAgile be applied to products that have no obvious user interface? The […] [Read More]

In Memoriam—Dr. Thomas (Tom) S. Tullis

Dr. Thomas S. Tullis was born on April 16, 1952, in Memphis, Tennessee and died from complications of COVID-19 on April 29, 2020. He leaves behind his wife, Susan (Richardson) Tullis, and two adult children, Cheryl Tullis Sirois (along with her husband, Craig Ernest Sirois, Jr.) and Virginia Tullis. He is also remembered fondly by […] [Read More]

Validity of Three Discount Methods for Measuring Perceived Usability

Abstract Within the domain of subjective usability assessment, several potential discount methods exist. However, there is little or no prior research investigating how these methods compare in their impact on subjective usability ratings. This study compared four methods of collecting subjective usability data with the System Usability Scale (SUS). Users were asked to use and […] [Read More]

TrustDiff: Development and Validation of a Semantic Differential for User Trust on the Web

Abstract Trust is an essential factor in many social interactions involving uncertainty. In the context of online services and websites, the problems of anonymity and lack of control make trust a vital element for successful e-commerce. Despite trust having received sustained attention, there is a need for validated questionnaires that can be readily applied in […] [Read More]