Publikation: Evaluating Complementary Interfaces as a Design-Informing Activity
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An increasing number of interactive devices is finding their way into our everyday lives. People own several devices and find creative ways to combine them. Research has found interest in these Ubiquitous Computing environments and pushed the boundaries of technological possibilities by sophistically blending devices together - following a „the more the merrier“ approach - a common theme in Human-Computer Interaction research that is often better at proposing new technologies than at validating them - leading to a fragmented research landscape and a need for evaluation.
This dissertation addresses this need for evaluation by studying Complementary Interfaces as representatives for Ubiquitous Computing environments using controlled lab-based experiments that serve as design-informing activities - guided by the general research question of how to design and evaluate Complementary Interfaces.
Building on the theoretical foundations of Mark Weiser's vision of the computer for the 21st century and related research on Cross-Device Interaction, Hybrid User Interfaces, and Multimodal Interaction, the concept of Complementary Interfaces is defined as meaningful combinations of interfaces that support users in their current task at hand. As part of this dissertation, three use cases of Complementary Interfaces are empirically studied using experimental methods. The selection of these use cases allows us to investigate the influences of variants of output modalities, input techniques, and their interaction - by focusing on different knowledge activities as well as combinations and dependencies of components. Specifically, the presented Complementary Interfaces allow us to study the role of a shared interactive surface on collaborative activities, the influences of a set of meaningful combinations of input and output modalities on spatial memory, and the effects of interaction techniques on the utilization of components.
The experimental designs for each Complementary Interface purposefully integrate typical components for experiments in Human-Computer Interaction to frame the empirical research, which allows the use of experiments as design-informing activities for future research and design of Complementary Interfaces.
As prior research has identified the influences of handling multiple devices and modalities on cognitive workload, a spotlight is placed on current and past measurements of cognitive workload - a potential dependent variable in experimental settings for Complementary Interfaces.
This dissertation closes with an extension of the concept of Complementary Interfaces towards new dimensions by showcasing how the presented ideas for the design and evaluation can be applied to meaningful combinations of heterogenous devices and modalities - eventually opening up research opportunities for highly dynamic collaborative Complementary Interfaces - emphasizing the need to study the utility, relevance, and role of each piece of the puzzle to eventually create a symbiosis of interfaces.
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ZAGERMANN, Johannes, 2024. Evaluating Complementary Interfaces as a Design-Informing Activity [Dissertation]. Konstanz: Universität KonstanzBibTex
@phdthesis{Zagermann2024Evalu-71908, title={Evaluating Complementary Interfaces as a Design-Informing Activity}, year={2024}, author={Zagermann, Johannes}, address={Konstanz}, school={Universität Konstanz} }
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