Context-Based Interface Prototyping: Understanding the Effect of Prototype Representation on User Feedback


The rise of autonomous systems in cities, such as automated vehicles (AVs), requires new approaches for prototyping and evaluating how people interact with those systems through context-based user interfaces, such as external human-machine interfaces (eHMIs). In this paper, we present a comparative study of three prototype representations (real-world VR, computer-generated VR, real-world video) of an eHMI in a mixed-methods study with 42 participants. Quantitative results show that while the real-world VR representation results in higher sense of presence, no significant differences in user experience and trust towards the AV itself were found. However, interview data shows that participants focused on different experiential and perceptual aspects in each of the prototype representations. These differences are linked to spatial awareness and perceived realism of the AV behaviour and its context, affecting in turn how participants assess trust and the eHMI. The paper offers guidelines for prototyping and evaluating context-based interfaces through simulations.

Honorable Mention
Marius Hoggenmüller
School of Architecture, Design and Planning, The University of Sydney, Sydney, NSW, Australia
Martin Tomitsch
The University of Sydney, Sydney, Australia
Luke Hespanhol
The University of Sydney, Sydney, New South Wales, Australia
Tram Thi Minh. Tran
University of Sydney, Sydney, NSW, Australia
Stewart Worrall
University of Sydney, Sydney, NSW, Australia




会議: CHI 2021

The ACM CHI Conference on Human Factors in Computing Systems (

セッション: UX and Interaction Design and Research: Techniques, Insights & Prototyping / Reflection, Behavior, Change & Learning

[C] Paper Room 13, 2021-05-14 09:00:00~2021-05-14 11:00:00 / [A] Paper Room 13, 2021-05-13 17:00:00~2021-05-13 19:00:00 / [B] Paper Room 13, 2021-05-14 01:00:00~2021-05-14 03:00:00
Paper Room 13
13 件の発表
2021-05-14 09:00:00
2021-05-14 11:00:00