Number of co-authors:16
Number of publications with 3 favourite co-authors:Timothy Cribbin:3Sherry Y. Chen:2Jane Coughlan:2
Robert MacRedie's 3 most productive colleagues in number of publications:Chaomei Chen:51Willem-Paul Brinkm..:17Peter J. Thomas:15
The theory gives the answers, not the theorist.
-- Allen Newell
Read the fascinating history of Wearable Computing, told by its father, Steve Mann
Read Steve's chapter !
Has also published under the name of:
"Robert D. Macredie" and "R. D. Macredie"
Publications by Robert MacRedie (bibliography)
Coughlan, Jane, MacRedie, Robert and Patel, Nayna (2007): Moving face-to-face communication to Web-based systems. In Interacting with Computers, 19 (1) pp. 1-6.
Coughlan, Jane, MacRedie, Robert and Patel, Nayna (2007): Evaluating the effectiveness of customers' communication experiences with online retailers -- A study of e-mortgages. In Interacting with Computers, 19 (1) pp. 83-95.
Retailers increasingly use the Internet for supporting customer interaction in the delivery of products and services online, whilst simultaneously displacing direct communication to a seller with 'faceless' technology. Research has tended to marginalise the importance of this communication change, possibly because of the lack of appropriate models for evaluating communication effectiveness. This paper therefore seeks to develop and apply such an evaluative model, which is underpinned by communication theory. The context of application is e-mortgage lending -- based on the selection of two banks' interfaces -- as evidence suggests that this type of e-commerce activity presents difficulties in electronic communication where, for example, the customer need for face-to-face mortgage advice prevails. Findings from the model's application reveal that whilst users respond socially to the interfaces, a number of communication problems can be identified by theme. Reflection is provided on the model's usefulness for evaluating the effectiveness of customers' online communication experiences.
© All rights reserved Coughlan et al. and/or Elsevier Science
Chen, Sherry Y., Ghinea, Gheorghita and MacRedie, Robert (2006): A cognitive approach to user perception of multimedia quality: An empirical investigation. In International Journal of Human-Computer Studies, 64 (12) pp. 1200-1213.
Whilst multimedia technology has been one of the main contributing factors behind the Web's success, delivery of personalized multimedia content has been a desire seldom achieved in practice. Moreover, the perspective adopted is rarely viewed from a cognitive styles standpoint, notwithstanding the fact that they have significant effects on users' preferences with respect to the presentation of multimedia content. Indeed, research has thus far neglected to examine the effect of cognitive styles on users' subjective perceptions of multimedia quality. This paper aims to examine the relationships between users' cognitive styles, the multimedia quality of service delivered by the underlying network, and users' quality of perception (understood as both enjoyment and informational assimilation) associated with the viewed multimedia content. Results from the empirical study reported here show that all users, regardless of cognitive style, have higher levels of understanding of informational content in multimedia video clips (represented in our study by excerpts from television programmes) with weak dynamism, but that they enjoy moderately dynamic clips most. Additionally, multimedia content was found to significantly influence users' levels of understanding and enjoyment. Surprisingly, our study highlighted the fact that Bimodal users prefer to draw on visual sources for informational purposes, and that the presence of text in multimedia clips has a detrimental effect on the knowledge acquisition of all three cognitive style groups.
© All rights reserved Chen et al. and/or Academic Press
Kanis, Marije, Brinkman, Willem-Paul and MacRedie, Robert (2006): Facilitating socio-pleasure as mediated by ubiquitous technology. In: Proceedings of ECCE13 2006, Zürich. .
Chen, Sherry Y. and MacRedie, Robert (2004): Cognitive Modeling of Student Learning in Web-Based Instructional Programs. In International Journal of Human-Computer Interaction, 17 (3) pp. 375-402.
There has been tremendous growth in Web-based instruction over the past few years. Because the user group of Web-based instruction includes learners from heterogeneous backgrounds, individual differences become an important issue in the development of Web-based instructional programs. Among a variety of individual differences, cognitive style is a particularly important characteristic. This study aims to determine the relationships between learners' cognitive styles and their perceptions and attitudes toward the features of a Web-based instructional program. The results indicate that cognitive styles influence students' reactions to nonlinear interaction, independent learning, and navigation tools and the difficulties and problems that they encounter. The findings are applied to develop a learning model that can support the design of Web-based instructional programs.
© All rights reserved Chen and MacRedie and/or Lawrence Erlbaum Associates
Chen, Chaomei, Cribbin, Timothy, Kuljis, Jasna and MacRedie, Robert (2002): Footprints of information foragers: behaviour semantics of visual exploration. In International Journal of Human-Computer Studies, 57 (2) pp. 139-163.
Social navigation exploits the knowledge and experience of peer users of
information resources. A wide variety of visual-spatial approaches become
increasingly popular as a means to optimize information access as well as to
foster and sustain a virtual community among geographically distributed users.
An information landscape is among the most appealing design options of
representing and communicating the essence of distributed information resources
to users. A fundamental and challenging issue is how an information landscape
can be designed such that it will not only preserve the essence of the
underlying information structure, but also accommodate the diversity of
individual users. The majority of research in social navigation has been
focusing on how to extract useful information from what is in common between
users' profiles, their interests and preferences. In this article, we explore
the role of modelling sequential behaviour patterns of users in augmenting
social navigation in thematic landscapes. In particular, we compare and analyse
the trails of individual users in thematic spaces along with their cognitive
ability measures. We are interested in whether such trails can provide useful
guidance for social navigation if they are embedded in a visual-spatial
environment. Furthermore, we are interested in whether such information can
help users to learn from each other, for example, from the ones who have been
successful in retrieving documents. In this article, we first describe how
users' trails in sessions of an experimental study of visual information
retrieval can be characterized by Hidden Markov Models. Trails of users with
the most successful retrieval performance are used to estimate parameters of
such models. Optimal virtual trails generated from the models are visualized
and animated as if they were actual trails of individual users in order to
highlight behavioural patterns that may foster social navigation. The findings
of the research will provide direct input to the design of social navigation
systems as well as to enrich theories of social navigation in a wider context.
These findings will lead to the further development and consolidation of a
tightly coupled paradigm of spatial, semantic and social navigation.
© All rights reserved Chen et al. and/or Academic Press
Thomas, Peter and MacRedie, Robert (2002): Introduction to the new usability. In ACM Transactions on Computer-Human Interaction, 9 (2) pp. 69-73.
This paper introduces the motivation for and concept of the "new usability" and positions it against existing approaches to usability. It is argued that the contexts of emerging products and systems mean that traditional approaches to usability engineering and evaluation are likely to prove inappropriate to the needs of "digital consumers." The paper briefly reviews the contributions to this special issue in terms of their relation to the idea of the "new usability" and their individual approaches to dealing with contemporary usability issues. This helps provide a background to the "new usability" research agenda, and the paper ends by posing what are argued to be the central challenges facing the area and those which lie at the heart of the proposed research agenda.
© All rights reserved Thomas and MacRedie and/or ACM Press
Morar, S., MacRedie, Robert and Cribbin, Timothy (2001): A Study of the Relative Importance of Visual Cues in Desktop Virtual Environments. In: Proceedings of the Ninth International Conference on Human-Computer Interaction 2001. pp. 41-45.
Morar, S. S., MacRedie, Robert and Cribbin, Timothy (2001): Perceiving Depth in Desktop Virtual Environments: Effects of Motion Parallax and Object Placement. In: Proceedings of IFIP INTERACT01: Human-Computer Interaction 2001, Tokyo, Japan. pp. 700-701.
Keeble, R. J. and MacRedie, Robert (2000): Assistant Agents for the World Wide Web Intelligent Interface Design Challenges. In Interacting with Computers, 12 (4) pp. 357-381.
The development of 'intelligent' or 'adaptive' user interfaces has been a strong research theme in Human-Computer Interaction for many years, with the terms often used interchangeably. In this article we will argue that seeing these terms as interchangeable can be misleading and can have implications for the expectations of systems both from the designer's and user's perspectives. We will suggest that the emphasis at the interface should be on adaptation, leaving intelligent behaviour to the user. The article argues that realistic expectations of available interaction information must be maintained when specifying the behaviour of an adaptive interface, such as the one containing agents. This article illustrates the process of the design and implementation of a set of software agents which act as Web Assistants, aiding the user in browsing the world wide web (WWW): issues in specifying the agents' functionality and adaptation characteristics; issues in designing the adaptation and inference rules required for each agent and implementing and integrating them within a user interface. The process raises both architectural and implementation issues which lead to conclusions drawn at the end of the article, concerning adaptivity versus intelligence and considering specifically the quality of interaction information available and the need to maintain realistic expectations on the part of the designers of adaptive systems.
© All rights reserved Keeble and MacRedie and/or Elsevier Science
Wild, P. J. and MacRedie, Robert (2000): On Change and Tasks. In: Proceedings of the HCI00 Conference on People and Computers XIV 2000. pp. 45-60.
Thomas, Peter J., Meech, John F. and MacRedie, Robert (1995): Personal Information Appliances. In: Proceedings of the Sixth International Conference on Human-Computer Interaction 1995. pp. 945-950.
The range of information management activities which personal computing devices are intended to support include (a) Storage of local information created or manipulated by users (b) Retrieval of local and non-local information (c) Integration of multiple sources of local and non-local information (d) Decision-making by integrating stored, retrieved and integrated information (e) Communication with other users and devices The activities which comprise what may be termed 'personal information management' [1, 2, 3, 4] require not only the use of various technologies, media and modalities but their integration. In this paper we look at the characteristics of personal information appliances, the range of activities which they support, and review families of appliances and their application domains with examples from a current project.
© All rights reserved Thomas et al. and/or Elsevier Science
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