Volume 13, Issue 4, August 2018

Introduction to Volume 13, Issue 4, August 2018

Bill Albert and James R. Lewis

We are delighted to publish an editorial by Marc Hassenzahl titled “A Personal Journey Through User Experience.” The author explores the relationship between function, beauty, and pleasure in product design from a historical perspective. In his essay, he argues that many in the usability community have historically neglected the importance of hedonics in our research and design efforts. [Read More]


A Personal Journey Through User Experience

Mark Hazenahl 

Twenty years ago, it seemed as if functionalism had finally won. Back then, effective and efficient use had been the sole mission for practitioners of human-computer interaction (HCI). A sharp distinction was made between sober and elegant “tools” and gimmicky “toys”—the latter supposedly bloated with useless functionality and ornament. Supporting users’ task fulfillment was the holy grail, and practitioners waved ISO Standard 9241 around as if it were a magic spell. [Read More]


Are Two Pairs of Eyes Better Than One? A Comparison of Concurrent Think- Aloud and Co-Participation Methods in Usability Testing

Obead Alhadreti and Pam Mayhew

This paper presents the results of a study that aimed to compare the traditional concurrent think-aloud protocol with the co-participation method to determine the benefit of adding an additional participant to the testing session. The two methods were compared through an evaluation of a library website, and their relative validity and utility were measured using four points of comparison: overall task performance, test participants’ experiences, quantity and quality of problems discovered, and the cost of employing each method. [Read More]


Usability Comparison of Over-the-Shoulder Attack Resistant Authentication Schemes

Ashley Cain, and Jeremiah Still

Graphical authentication schemes offer a more memorable alternative to alphanumeric passwords. However, they have been criticized for being susceptible to over-the-shoulder attacks (OSA). To solve this shortcoming, schemes have specifically been designed to be resistant to OSA. Common strategies used to decrease the ease of OSAs are grouping targets among distractors, translating them to another location, disguising the appearance of targets, and using gaze-based input. We are the first to provide a direct comparison of the common strategies regarding usability and OSA resistance. Specifically, we examined three OSA resistant graphical schemes, an eye tracker scheme, and a traditional alphanumeric password. [Read More]


Usability Study to Improve Interaction Design for Drivers in Car-Sharing Systems

Byungsoo KimSharon JoinesRussell Flinchumand Jing Feng

Car-sharing system users generally rent a vehicle for a brief amount of time, and they often do not take enough time to learn the controls and functions of a car that they are unfamiliar with. The purpose of this study is to understand the difficulty of controlling a car’s functions while driving an unfamiliar car and to redesign controls to improve safety and usability. This study focuses on the secondary controls, such as those for the audio system and temperature system. [Read More]