CHI Nederland

HCI Close 2U - 9e conferentie (paper overzicht)


NB: van de titels met een hyperlink is ook een uitgebreide PDF versie beschikbaar


Papers: Personal and Social Needs

We-centric services for police officers and informal carers

Marc Steen (TNO), Ronald van Eijk (Telematica Instituut), Henny Gunther (ISC Politie), Sander Hooreman (Waag Society), Nicole de Koning (TNO)

We introduce the concept of we-centric ICT services, which are meant to help people to communicate and cooperate with others in dynamic or spontaneous groups. We-centric services make people aware of each other's contexts, so that they can experience "we" - and "we" changes dynamically. This R&D effort is executed in the domains of public safety and of health care, and in close cooperation with potential end-users: police officers and informal carers. This presentation is about fieldwork, about two we-centric services we develop and evaluate, and about our future research agenda.

Performance in a planning task: the (ir)relevance of interface style and users' cognitive style

Christof van Nimwegen (Universiteit Utrecht), Daniel Burgos (Open Universiteit)

This research investigates whether interface style (internalization or externalization) influences performance in a problem solving task. Assistance from a user interface during problem solving is often thought to make interactions easier. Interfaces often display relevant information, making recall unnecessary and relieving working memory, called externalization (e.g. feedback aids such as "graying out" menu-items). By externalizing information, display-based behavior is provoked, which however does not necessarily instigate planning, understanding and knowledge acquisition. When certain task-information is less directly available, it needs to be internalized, stored in memory, provoking plan-based behavior, which may lead to better performance and knowledge.
To provoke these behaviors, we manipulated the interface of a conference planning application. We also included the users' cognitive style, in this case "need for cognition" (NFC), the tendency to engage in and enjoy effortful cognitive tasks. High-NFC subjects generally plan more, leading to better performance. Results show that interface style indeed influences problem-solving behavior, but NFC does not. Internalization resulted in more planful behavior, better solution routes and less reconsidered actions. If plan-based behavior is preferred, designers should be careful in giving users too much assistance.

Sources of Requirement Change

Johan F. Hoorn (Vrije Universiteit)

Four years of study revealed that change requirements on an interactive system under development are based on changes in business models (goals and processes) but more importantly, on changes in personal stakeholder goals and work processes. Stakeholders perceive their personal goals as more relevant than business goals, but the requirements on the system that should help to establish those goals are considered business. Even if business-related requirements are not satisfying personal goals, stakeholders tend to agree with the business view. The grumping and moaning is left to the work floor. Once stakeholders oversee the consequences of requirements to their personal tasks and work situation, they start, for example, to change the priorities on the requirements list.

Interactive session: 'Doctoral Consortium'

Interaction with Adaptive Information Delivery and Visualisation Systems
Henriette Cramer (UvA)

Learning filters, adapting with user interactions over time, can be put in the wider context of adaptive systems that dynamically modify the interface depending on user states, tasks and context. A pilot study investigating use of an adaptive spam filter has been carried out and results indicate that very few users actually trust and accept such an adaptive system to automatically make decisions on relevancy of information and delete messages. This PhD research project studies which factors influence acceptance of adaptive systems. It aims to build a model of human interaction with learning systems that provide information filtering and visualization and adapt to changes in context of use. Focus in further research will be on studying the effects of providing users with more transparency of the information in- and output of an adaptive information filtering system.

Affective Tangible Interaction; Towards Reducing Stress (klik op deze titel voor het pdf-document)

Miguel Bruns Alonso (TU Delft)

The proposed PhD research will identify what types of behavior or interactions with tangible products can be interpreted as stressful behavior. Continuously it will explore whether this behavior can be measured by means of behavioral sensors in a tangible interface and whether the processed information could serve as a trigger for physiological measurement or input for an intelligent environment that controls ambient displays such as light, music and projections. Finally the research will focus on how feedback on this behavior and physiological information could be presented on the tangible interface to the user in order to create awareness and support in coping with stress, and increase well-being.

Mood Boards: Industrial Designers' Perception of Using Mixed Reality (klik op deze titel voor het pdf-document)

Andrés Lucero, Jean-Bernard Martens (TU/e)

Developments in mixed reality systems in the last decade have provided proof-of-concepts by means of technology tailored usage scenarios. Instead of focusing on the technology required for implementation, we have shifted our focus towards users, investigating the potential impact of such techniques on the actual work practice of industrial designers. Specific activities have been identified during a full ethnographic study conducted by means of Cultural Probes and Workshops with representative participants. We have identified an important task, the creation of mood boards, and have explored how industrial designers perceive the use of mixed reality to support their work by asking them to create a mood board on an existing mixed reality prototype. Participants were enthusiastic about the idea of creating mood boards in mixed reality.

Paper talks: Yound and Old

Can You Teach an Old Dog New Tricks? How Older Adults Perceive Embodied (klik op deze titel voor het pdf-document) Agents

Mariët Theune, Renate ten Ham, Ard Heuvelman (Universiteit Twente)

In this experiment we investigate how older adults perceive an embodied agent as compared to younger people in the context of an information giving task. Our results show that older adults found the agent less friendly and likeable than the younger participants in our experiment, and that they had a strong preference for a human presenter. However, the older adults were relatively positive on some aspects of the agent's presentation, and their task performance for agent and human presenter was similar.

Extended guidelines for usability (and fun) testing with children (klik op deze titel voor het pdf-document)

Wolmet Barendregt, Mathilde M. Bekker (TU/e)

We present an extension of the existing guidelines for practitioners of how to prepare and conduct user tests (of computer games) with young children. The advice is based on the results of our experiments and the experiences of performing usability tests with 80 children between 4 and 8 years old, testing eight different adventure type games in our usability lab and at schools. Issues that are discussed are the number of test participants, the selection of effective test participants, the behaviour of the test facilitator towards the children during the test, and we propose a new method to optimize children's input during the test.

Personal Assistants for Healthcare Treatment at Home (klik op deze titel voor het pdf-document)

Geert de Haan, Charles A.P.G. van der Mast (TU Delft), Mark A. Neerincx (TNO)

We describe the research plans in the SuperAssist project, introducing personal assistants in the care of diabetes patients, assisting the patients themselves, the medical specialists looking after the patients' healthcare, and the technical specialists responsible for maintaining the health of the devices involved. We discuss the issues of trust and cooperation as the critical success factors within this multi-user multi-agent (MUMA) project and within the future of agent-based healthcare attempting to increase the self-help abilities of individual patients.

Poster and demo session: Home and Away

Who Controls your Context-Aware Home? (klik op deze titel voor het pdf-document)

Martijn H. Vastenburg (TU Delft)

Context-aware services are entering the homes. The home environment can be automatically adapted to the presumed user needs, considering for instance the current user activities and desired ambience, by a context-aware home system. Pro-active system-behavior in aware environments can result in a perceived loss of user control. Towards creating an environment that automatically adapts to the user needs without sacrificing user control, the relation between system autonomy level and perceived user control in the case of context-aware home services is currently being studied as part of a Ph.D. project.

Electronic Travel Companion for intellectually disabled persons

Kim Kranenborg, A.H.M Cremers (TNO Human Factors)

Current W3C guidelines for web content accessibility include neither specific guidelines for intellectually disabled persons nor guidelines for mobile devices. In order to develop these target group and device specific accessibility guidelines, a concept of a mobile Electronic Travel Companion was developed. The concept application allows intellectually disabled persons to travel independently by public transport. It consists of two parts: a desktop application for the intellectually disabled person's caregiver, where a user profile (including accessibility options) can be set and the trip can be planned; and a PDA (Personal Digital Assistant) application that presents step-by-step travel information to the intellectually disabled person during the actual trip.

NavAccess: An Auditory Based Navigation Tool for the Blind (klik op deze titel voor het pdf-document)

Hans Hillen (UvA)

In this research a tool is being developed which separates a website's navigation structure from its content and provides an alternative, consistent, audio based navigation interface. This interface can assist blind World Wide Web (WWW) users in navigating through inaccessible site infrastructures.

Sociability with Ubiquitous Technologies: A View on Phatic Interactions

Licia Calvi (KU Leuven)

We present an ongoing research project on the concept of phatic interactions via ubiquitous technologies. The project, which involves a significant number of Belgian universities and industries, explores the possibilities of community building using state-of-the-art technology, like mobile terminals, wireless networks, multimedia and metadata technology, to create a new, user-friendly experience. The basic underlying question concerns the possibilities for technology to support and encourage communication and interaction among different users. In our case, users belong to several communities of peers within which they exchange content of various nature.
Along with a series of technological problems to be tackled (related, for instance, to the use and the automatic generation of metadata), fundamental user-related issues also come into play.

User and task analysis of the mobile journalist

Ilse Bakx, David Geerts (KU Leuven)

We present the results of a user and task analysis for one of the pilot projects of the Interreg project "Virtual Lab for ICT Experience prototyping". The pilot is about making a flexible user interface for mobile journalists based on ICT Experience prototyping. We started the process with a contextual inquiry, enlarging the results with personas, scenarios, requirements and a task analysis to make user-centered design decisions to make the prototype user-friendly.

Designing products that adapt to dynamic contexts of use

Mieke Brouwer, Mascha C. Van der Voort (Universiteit Twente)

We discuss the application of adaptive user interfaces for products with a dynamic context of use. Products with dynamic contexts of use have varying users, environments and/or purposes such as vending machines, and mobile phones. Dynamic contexts of use require a dedicated design approach because they increase the designer's uncertainty and complicate evaluation. Moreover they challenge the designer's imagination. Therefore we need a method that supports the designer in dealing with uncertainty, in evaluating design alternatives and that stimulates imagination. We believe that a scenario based design method can offer such opportunities.

Poster presentations

Besides the 7 "Home & Away" posters and demos the results from the ICIS project will be presented.

The BSIK project ICIS (Interactive Collaborative Information Systems) entails four different research clusters; the CHIM cluster concerns human-machine interfacing. The ultimate goal of CHIM (Computational Human Interaction Modeling) is to develop computational models, theories and technologies about multi-modal human-human and human-machine interaction that can be implemented as integrated software demonstrations covering a multi-modal artificial perception/action cycle in well-defined professional task environments such as crisis management.
The central questions that are pursued in CHIM are:
  • How can we enhance multi-modal input recognition, fusion, DAM, fission and output using computational models of human interaction?
  • How can we detect and repair situations in which the human or the machine is lacking information or in which the trust and belief in the information that is communicated can be enhanced?

  • Six posters will be presented, on the following topics:
    • Input: face recognition
    • Input: communication using icon-language
    • Adaptive interfaces
    • User's trust in adaptive information distribution