Abstract. We describe a methodology for the automatic identification of communities of practice from email logs within an organization. We use a betweenness centrality algorithm that can rapidly find communities within a graph representing information flows. We apply this algorithm to an email corpus of nearly one million messages collected over a two-month span, and show that the method is effective at identifying true communities, both formal and informal, within these scale-free graphs. This approach also enables the identification of leadership roles within the communities. These studies are complemented by a qualitative evaluation of the results in the field.

Abstract not found

Online spaces that enable shared public interpersonal communications are of significant social, organizational, and economic importance. In this paper, a theoretical model and associated unobtrusive method are proposed for researching the relationship between online spaces and the behavior they host. The model focuses on the collective impact that individual information-overload coping strategies have on the dynamics of open, interactive public online group discourse. Empirical research was undertaken to assess the validity of both the method and the model, based on the analysis of over 2.65 million postings to 600 Usenet newsgroups over a 6-month period. Our findings support the assertion that individual strategies for coping with “information overload” have an observable impact on large-scale online group discourse. Evidence was found for the hypotheses that: (1) users are more likely to respond to simpler messages in overloaded mass interaction; (2) users are more likely to end active participation as the overloading of mass interaction increases; and (3) users are more likely to generate simpler responses as the overloading of mass interaction grows. The theoretical model outlined offers insight into aspects of computer-mediated communication tool usability, technology design, and provides a road map for future empirical research.

Historically, at least 3 methodological problems have dogged experimental social psychology: the experimental control–mundane realism trade-off, lack of replication, and unrepresentative sampling. We argue that immersive virtual environment technology (IVET) can help ameliorate, if not solve, these methodological problems and, thus, holds promise as a new social psychological research tool. In this article, we first present an overview of IVET and review IVET-based research within psychology and other fields. Next, we propose a general model of social influence within immersive virtual environments and present some preliminary findings regarding its utility for social psychology. Finally, we present a new paradigm for experimental social psychology that may enable researchers to unravel the very fabric of social interaction.

cation as an integrated set of speech, gaze, and gestural behaviours. As we shall see, studies of mediated communication allow us to identify the contribution of different nonverbal behaviours, such as gaze and gesture to communication. They also help to clarify the overall influence of visual information in communication, and the effects of communication interactive processes such as feedback on communication. Prior to examining what research has to say about these issues, we describe: (a) mediated communication theories; (b) the technologies used to support communication in the various situations; (c) the methods used to study mediated communication. Theories of mediated communication There are many different theories of mediated communication. Rather than describing each in detail, we restrict ourselves here to an exposition of the general form that these theories take, and the general set of claims that they make. The fundamental goal of mediated communication theor

: Social Sciences are increasingly interested in understanding the characteristics of Computer Mediated Communication and its effects on people, groups and organisations. The first effect of this influence is the revolution in the metaphors used to describe communication. After describing these changes, the paper outlines a framework for the study of computer-mediated communication and considers the three psychosocial roots of the process by which interaction between users is constructed -- networked reality, virtual conversation and identity construction. The paper also considers the implications of these changes for current research in communication studies, with particular reference to the role of context, the link between cognition and interaction, and the use of interlocutory models as paradigms of communicative interaction: communication is not only -- or not so much -- a transfer of information, but also the activation of a psychosocial relationship, the process by which interlo...

The aim of this research is to develop an in-depth understanding of the dynamics of online group interaction and the relationship between the participation in an online community and an individual’s off-line life. The 21 /2-year study of a thriving online health support community (Bob’s ACL WWWBoard) used a broad fieldwork approach, guided by the ethnographic research techniques of observation, interviewing, and archival research in combination with analysis of the group’s dynamics during a one-week period. Research tools from the social sciences were used to develop a thick, rich description of the group. The significant findings of this study include: dependable and reliable technology is more important than state-of-the-art technology in this community; strong community development exists despite little differentiation of the community space provided by the software; members reported that participation in the community positively influenced their offline lives; strong group norms of support and reciprocity made externally-driven governance unnecessary; tools used to assess group dynamics in face-to-face groups provide meaningful information about online group dynamics; and, membership patterns in the community and strong subgroups actively contributed to the community’s stability and vitality.

Most of the knowledge management systems of complex organizations are based on technological architectures that are in contradiction with the social processes of knowledge creation. In particular, centralized architectures are adopted to manage a process that is intrinsically distributed. In this paper, assuming a Distributed approach to Knowledge Management (DKM), is proposed that technological and social architectures must be reciprocally consistent.

Abstract not found

I would like to extend my gratitude to a number of people. Any project of this magnitude requires a wide range of talents. I am indebted to Thawatchai Piyawat and Dick Seabrook for their consummate programming skills, and to Jantawan Noiwan for her statistical advice. Drafts of this thesis were considerably improved through the thoughtful comments and editing of Heather McDonald and Carolyn Davidson. Additional thanks go to mentors Tom Carey and Dave Hendry. None of this would have been possible without the interviewees and the members of the discussion lists. I thank them for their time, insight and participation. The research was carried out at South Bank University and the University of Maryland Baltimore County. I am grateful to both universities for their support. Finally, special thanks to my committee, Fintan Culwin, Xristine Faulkner, and Jenny Preece. i The goal of this thesis is to increase our understanding of lurkers and lurking in online groups by addressing three primary questions: why do lurkers lurk, what do lurkers do, and how many lurkers are there? Lurkers reportedly make up the majority of members in online groups, yet little is known about them. Without insight into lurkers and lurking, our understanding of online groups is incomplete. Ignoring,