Distributed cognition and computer supported collaborative design: The organisation of work in construction engineering

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The intellectual contribution of this thesis lies within the area of computer supported co-operative work (CSCW), and more specifically, computer supported co-operative design (CSCD). CSCW is concerned with the development of information systems and technological support for multi-participant work activities. Research into CSCW seeks to understand how people and organisations interact with one another, and to integrate this understanding with the development of computer based tools to support real world settings. Much of the technology developed to support the work of designers has been developed to aid individuals working alone, with tools like computer aided drafting (CAD), scheduling, and database software. The growth of interest in ‘groupware’ has led many technology developers to adapt these design tools for use in group situations. However, joint activities are different from those performed alone, and organisational structures can both interfere with, and supplement co-operative work practices in a way that the current technologies cannot provide support for. To develop effective group design tools, we need to understand more about collaborative processes in design. This thesis draws from the theoretical underpinning of cognitive science and the methods of anthropology and sociology, in an interdisciplinary study of design performance in the construction industry. Fieldwork is used as a method of qualitative data collection and this is examined within the analytic framework of distributed cognition. The results of this analysis provide a useful and usable description of the work of design that technology developers can use to support collaborative design work. In line with the methods of distributed cognition, the activities observed in the workplace studies are examined in terms of their processes and representations. The resources that were available to the design participants are made explicit, as are their situation-specific work patterns. Two case studies of design are examined. The first of these describes design work in a civil engineering project, which involves a number of different design activities. The second describes the work of consulting engineers in building design, focusing on a more limited design role, which is used to back up and supplement areas of the first study that were understood to be particularly relevant. The findings of the study demonstrate how design processes operate simultaneously at personal, organisational and inter-organisational levels. The distinction between the formal, organisational procedures, and the informal, social processes that compliment them is examined to show how these are interrelated in the performance of the design task and their importance to the mechanisms used to co-ordinate actions. The findings of the study have implications for the development of novel technologies to augment the engineering design process, and have already been used in the development of assistive design technologies. The thesis demonstrates that the framework of distributed cognition can be used in the analysis of cognition within a setting, involving multiple individuals, in concert with 'natural' and 'artificial' artefacts. The thesis makes clear a number of processes in design that can only be examined from a perspective which includes the social dimensions of work. The methods of study focus on the resources in collaborative activities, whilst the analysis, structured in terms of the representations and processes of collaborative activity, shows that the method can be used effectively in the development of CSCW and CSCD technologies

A MEETING OF MINDS ACROSS THE WORKSPACE: COMMON GROUND IN COLLABORATIVE DESIGN

This thesis reports an exploration of how the use and construction of external representations through methods of signalling and conversational grounding, support the sharing of ideas for spatial design tasks and how that support changes as a function of access to a shared works pace, external representations and memory support. Further aims of the study were to develop a coding scheme to identify the use of language in establishing and maintaining mutual understanding between collaborators. Pilot studies identified appropriate tasks relating to visual problem-solving design tasks for use in the main studies. For the main studies, video recordings were obtained, coded and time-stamped and analysis of the duration of grounding and activity codes, as well as concurrent grounding and activity, was carried on the impact of tasks and constraints on communication. For the first study 36 pairs of participants were used to investigate collaborative problem-solving and visual access to a shared workspace was varied. For the second study, 30 pairs of participants were used to investigate how ‘learned’ solutions are communicated. Again visual access to a shared workspace was varied, together with the manipulation of the opportunity for communicators to have access to external representations and memory support. Evidence was obtained to support the principles of ‘co-operation' and 'least collaborative effort' in conversation. Differences in the use and construction of external representations were discussed in terms of compensations, and changes in dyadic interactivity, made as a function of limitations in the media settings and the purpose of the joint activity. Other issues emerged relating to perceived communication efficacy as a result of a divided workspace focus and competition between problem-solving and grounding resources. These findings have implications for design cognition and communication as well as the technological support offered to support such activities

The CSCW paradigm for software development

People work together to solve a wide variety of problems using different forms of cooperation for each class of problem. Modern technology is complex, and therefore it is unusual for an individual to attempt the development of a major project single-handedly. In an attempt to provide computer-based support for the problems that arise when two or more people attempt to cooperate to perform a task or solve a problem, the area of Computer Supported Cooperative Work (CSCW) becomes relevant. The software development process almost invariably involves cooperation that crosses group, professional, and subcultural boundaries. The complexity of software development demands that highly integrated groups of analysts, designers, and users are involved in the process. Many development activities may occur concurrently. The area of CSCW and advanced information technology, with its enormous capabilities for transmitting and storing information, holds considerable promise for the software development process.ComputingM. Sc. (Information Systems