Proceedings of the Sixth Danish Human-Computer Interaction Research Symposium.

Proceedings of theSixth Danish Human-Computer Interaction Research Symposium.Aarhus, Denmark, November 15, 200

An Empirical Study of Thinking Aloud Usability Testing from a Cultural Perspective

Usability evaluation methods are widely used to assess and improve the user interface design. This dissertation investigates the thinking aloud usability testing from a cultural perspective. In a test situation, representative users are required to verbalize their thoughts as they perform their tasks while using the system, and an evaluator observes the user’s task performance and comes up with usability problems. The primary goal of a usability test is to find a list of usability problems. In this research, the impacts of evaluators’ and users’ cultural backgrounds on both the result and the process of the thinking aloud usability testing were investigated. Regarding the results of the usability testing, the identified usability problem was the main focus, whereas for the process of testing, the communication between users and evaluators was the main focus. In this dissertation, culture was regarded as cognitive styles and communication orientations. For the theories of thinking aloud, both Ericsson and Simon’s classic model, and Boren and Ramey’s revised model for usability testing were taken into account. Based on the culture theories and thinking aloud models, hypotheses were developed to investigate the evaluators’ identified usability problems in different cultural settings, and themes were put forward to investigate the evaluators’ and users’ communications. In order to investigate the hypotheses and themes, an experimental study was conducted. The experimental design consisted of four independent groups with evaluators and users from similar or different cultures (Danish and Chinese). Empirical data were collected by using background questionnaires, usability problem forms, usability problem lists, video recordings of the testing and interviews. The usability testing software “Morae” was used to record the whole testing, including the faces of the evaluators and users, the screen and keyboard activities. Evaluators’ and users’ communications were analyzed by the behavioural coding and analysis software “Observer XT 8.0” with a well defined coding system. The results of the systematic study of the thinking aloud usability testing in the context of the intra- and inter-cultural usability engineering show that the evaluators’ cultural backgrounds do have some influences on the usability testing; however, the influences are different for the tests with Western and East Asian users. The main findings of this research have implications for both usability research and practice. The methodological approach also gives inspiration for usability evaluation studie

Gaze Path Stimulation in Retrospective Think-Aloud

For a long time, eye tracking has been thought of as a promising method for usability testing. During the last couple of years, eye tracking has finally started to live up to these expectations, at least in terms of its use in usability laboratories. We know that the user’s gaze path can reveal usability issues that would otherwise go unnoticed, but a common understanding of how best to make use of eye movement data has not been reached. Many usability practitioners seem to have intuitively started to use gaze path replays to stimulate recall for retrospective walk through of the usability test. We review the research on thinkaloud protocols in usability testing and the use of eye tracking in the context of usability evaluation. We also report our own experiment in which we compared the standard, concurrent think-aloud method with the gaze path stimulated retrospective think-aloud method. Our results suggest that the gaze path stimulated retrospective think-aloud method produces more verbal data, and that the data are more informative and of better quality as the drawbacks of concurrent think-aloud have been avoided

An innovative search interface for gesture dictionary

We live in a multicultural world. We need to learn how to communicate with each other, sometimes even without words, using only gestures. To help people better communicate in the multicultural epoch, the German company Fragenstellerin developed the gesture dictionary application on an iOS platform. To cover the bigger population of users, I designed an innovative search interface for gesture dictionary on an Android platform. I applied user-centered design method to the very popular modern industrial task of moving applications from one platform to another. I analyzed the user interface of the iOS Gestunary solution, collected user’s reflections, researched similar products, and gesture coding schemes. I performed three development and testing iterations, including co-design, User-based tests, and SUS tests. I also conducted gesture illustration research, which showed a clear preference towards color photos over drawings and other illustration options. My additional study demonstrated that it is feasible to implement automatic gesture recognition for the Gestunary application. As the main result, I developed an innovative search interface for the Gestunary application on the Android platform

Proceedings from NordiCHI 2008 Workshop Sunday October 19, 2008

This paper raises themes that are seen as some of the challenges facing the emerging practice and research field of Human Work Interaction Design. The paper has its offset in the discussions and writings that have been dominant within the IFIP Working Group on Human Work Interaction Design (name HWID) through the last two and half years since the commencement of this Working Group. The paper thus provides an introduction to the theory and empirical evidence that lie behind the combination of empirical work studies and interaction design. It also recommends key topics for future research in Human Work Interaction Design

Designing Clinical Data Presentation Using Cognitive Task Analysis Methods

Despite the many decades of research on effective use of clinical systems in medicine, the adoption of health information technology to improve patient care continues to be slow especially in ambulatory settings. This applies to dentistry as well, a primary care discipline with approximately 137,000 practicing dentists in the United States. One critical reason is the poor usability of clinical systems, which makes it difficult for providers to navigate through the system and obtain an integrated view of patient data during patient care. Cognitive science methods have shown significant promise to meaningfully inform and formulate the design, development and assessment of clinical information systems. Most of these methods were applied to evaluate the design of systems after they have been developed. Very few studies, on the other hand, have used cognitive engineering methods to inform the design process for a system itself. It is this gap in knowledge – how cognitive engineering methods can be optimally applied to inform the system design process – that this research seeks to address through this project proposal. This project examined the cognitive processes and information management strategies used by dentists during a typical patient exam and used the results to inform the design of an electronic dental record interface. The resulting 'proof of concept' was evaluated to determine the effectiveness and efficiency of such a cognitively engineered and application flow design. The results of this study contribute to designing clinical systems that provide clinicians with better cognitive support during patient care. Such a system will contribute to enhancing the quality and safety of patient care, and potentially to reducing healthcare costs

DHRS 2009 Proceedings of the Ninth Danish Human-Computer Interaction Research Symposium.

Since 2001 the annual Danish Human-Computer Interaction Research Symposium has been a platform for networking, and provided an opportunity to get an overview across the various parts of the Danish HCI research scene. This years symposium was held in Aarhus, Denmark on December 14, 200

Shared ethnography of shared cities

This paper aims to foreground issues for design ethnographers working in urban contexts within the smart-city discourse. It highlights ethnography’s role in a shared urban future by exploring how ethnographers might pave the way for envisioning digital infrastructure at the core of Smart City programs. This paper begins by asking whether urban development practitioners can design for inclusive interaction with Smart Urban Infrastructure. The research suggests how ethnographers can work with ‘cities’ to rapidly develop diagnostic tools and capture insights that inform design processes with both utility and inclusive interaction as their key values. This involves rethinking how we consider places where space and information intersect. This work led to developing rapid means to assay a site and sensitize to contextual issues by tapping into heuristic expertise innate in city dwellers. This means doing ethnography in parallel with publics as opposed to performing ethnography ‘on’ them. Hence we discuss a fresh ethnographic perspective that can be especially useful in this context; shared ethnography