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Thesis (Ph.D.)--Drexel University, 2008. / Includes abstract and vita. Includes bibliographical references (leaves 153-157).

In this thesis I explore how older people make use of, and interact with, their physical environment in home and near-by settings to manage cognitive situations, specifically prospective memory situations. Older adults have in past research been shown to perform better on prospective memory in real-life settings than what findings in laboratory-like settings predict. An explanation for this paradox is that older adults has a more developed skill of using the environment for prospective memory than younger adults. However, research investigating this explanation has primarily been based on self-reports. I contribute to the understanding of this skill by doing two related things. First I introduce distributed cognition, a theoretical perspective that primarily has been used within professional and socio-technical environments, to the research field of prospective memory in everyday life. Second I present a cognitive ethnography conducted during two years across eight home, and near-by, environments and old-age retired persons, for which I have used theoretical concepts from distributed cognition to analyze observations. The analysis shows rich variations in how participants use common cultural cognitive tools, invent their own cognitive tools, deliberately and incidentally shape more or less functional spaces, make use of other physical features, orient themselves toward and make sense of cognitive resources. I complement both prospective memory and distributed cognition research by describing both the intelligent shaping and use of space. Furthermore, by taking a distributed cognitive perspective I show that prospective memory processes in home environments involve properties, and the management, of a multipurpose environment. Altogether this supports the understanding of distributed cognition as a perspective on all cognition. Distributed cognition is not a reflection of particular work practices, instead it is a formulation of the general features of human cognition. Prospective memory in everyday life can be understood as an ability persons have. However, in this thesis I show that prospective memory can also be understood as a process that takes place between persons, arrangements of space, and tools.

In the last few decades, there has been growing attention to situated or distributed perspectives on learning and cognition. The purpose of this study was to examine science learning in classroom settings through the lens of distributed cognition. A particular focus of this study was on the public space of interaction that includes participants' interactions with each other and with artefacts in the environment. / Focusing on the event of student experiment design, two science lessons were videotaped in this study, in which a class of Grade-seven participants was asked to investigate the scientific theme of gravity by designing parachutes and pendulums. The video-stimulated post-lesson interviews with both teacher and student provided complementary data in order to understand their practice in these lessons. / The analysis of two science lessons reveals the different functions of language, gestures, and material objects and their relative significance in the process of student meaning making and knowledge construction. It shows that (1) the language of science is best understood as an artefact employed by the participants to achieve mutual understanding; (2) gestures and other forms of non-verbal acts build the connections between the conceptual and the physical worlds, and provided perceptual resources that foregrounded the salient aspects of their environment; and (3) material objects helped the students to understand each other by disambiguating references to objects, but (4) material objects constrained student sense-making. The analysis also demonstrated that (5) the learning activity was enacted through the participants' deployment of a range of artefacts, and (6) the manipulation of conceptual artefacts was interdependent of the manipulation of material objects. / Building on the theoretical framework of distributed cognition, this study was able to document the students' learning processes by investigating classroom interactions in great detail. The findings and techniques resulting from this study will help teachers and researchers to achieve a better understanding of science learning in classrooms and the role of artefacts in this learning and assist them to improve the learning environments.

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.

In the last few decades, there has been growing attention to situated or distributed perspectives on learning and cognition. The purpose of this study was to examine science learning in classroom settings through the lens of distributed cognition. A particular focus of this study was on the public space of interaction that includes participants' interactions with each other and with artefacts in the environment. / Focusing on the event of student experiment design, two science lessons were videotaped in this study, in which a class of Grade-seven participants was asked to investigate the scientific theme of gravity by designing parachutes and pendulums. The video-stimulated post-lesson interviews with both teacher and student provided complementary data in order to understand their practice in these lessons. / The analysis of two science lessons reveals the different functions of language, gestures, and material objects and their relative significance in the process of student meaning making and knowledge construction. It shows that (1) the language of science is best understood as an artefact employed by the participants to achieve mutual understanding; (2) gestures and other forms of non-verbal acts build the connections between the conceptual and the physical worlds, and provided perceptual resources that foregrounded the salient aspects of their environment; and (3) material objects helped the students to understand each other by disambiguating references to objects, but (4) material objects constrained student sense-making. The analysis also demonstrated that (5) the learning activity was enacted through the participants' deployment of a range of artefacts, and (6) the manipulation of conceptual artefacts was interdependent of the manipulation of material objects. / Building on the theoretical framework of distributed cognition, this study was able to document the students' learning processes by investigating classroom interactions in great detail. The findings and techniques resulting from this study will help teachers and researchers to achieve a better understanding of science learning in classrooms and the role of artefacts in this learning and assist them to improve the learning environments.

This study sought to address two connections that are fundamental to studies of science teaching and learning in classroom settings. The first one is the connection between classroom instruction and student learning outcomes, and the second one is the relationship between theoretical choice and analytical results. In this study, two theoretical perspectives were employed in parallel to examine a sequence of nine lessons on the topic of “Matter” in a Year 7 science classroom. These two theoretical perspectives are: Distributed Cognition (Hutchins, 1995) and Variation Theory (Marton and Tsui, 2004). The results of each analysis were compared and contrasted in an attempt to identify their similarities and differences in describing and explaining the classroom practice documented.The analyses from both theoretical lenses pointed to several issues underlying student difficulties identified in this classroom, including the problematic macroscopic-microscopic relationship, the lack of attention to “substance”, and the taken-for-granted temperature conditions. However, the two theoretical perspectives differed in their capacity to accommodate learning at different levels, to address the connection between instruction and learning, and to identify and advocate the likely benefits of particular instructional approaches. Distributed Cognition unfolded the connection between teaching and learning by a careful examination of social interactions and the utilization of artefacts in these interactions. It speculated learning occurring in different types of social configurations and interactions found in a science classroom (e.g. collaborative activities). From the perspective of Distributed Cognition, the inappropriate employment or coordination of resources was the key factor contributing to the limited success in establishing shared understanding among the participants in the classroom. Variation Theory explicitly modelled the connection between instruction and learning through the idea of patterns of variation, and it provided some general principles to evaluate the teaching of a specific topic. From the perspective of Variation Theory, it was the lack of appropriate variation in the key attributes of the object of learning that contributed to the limited success in developing student capability to make differentiations between critical and uncritical aspects of a scientific concept. But current applications of Variation Theory do not include learning occurring in the private domain of the classroom (e.g. student-student interaction) and are silent on the role of collaborative activity (e.g. group work) in learning.The juxtaposition of the parallel analyses showed that the two theories are complementary and mutually informing in their explanations of the documented classroom practice. But their assumptions about what constitutes learning and what contributes to that learning differed from each other. This study suggested that we should focus our attention on the identification of the contingencies of compatibilities in our efforts to combine or synthesize elements of different theories. In this study, the local combination of the results generated from the parallel analyses contributed to a more complete understanding of science learning as it occurred in the classroom.The findings of this study should inform science teaching, curriculum development, and instructional design of science classrooms. It also generated implications for research into science classrooms and suggested the need for the science education community to examine the role of theory and the relationship between theoretical choice and analytical results obtained through the employment of a particular theory.

This study sought to address two connections that are fundamental to studies of science teaching and learning in classroom settings. The first one is the connection between classroom instruction and student learning outcomes, and the second one is the relationship between theoretical choice and analytical results. In this study, two theoretical perspectives were employed in parallel to examine a sequence of nine lessons on the topic of “Matter” in a Year 7 science classroom. These two theoretical perspectives are: Distributed Cognition (Hutchins, 1995) and Variation Theory (Marton and Tsui, 2004). The results of each analysis were compared and contrasted in an attempt to identify their similarities and differences in describing and explaining the classroom practice documented.The analyses from both theoretical lenses pointed to several issues underlying student difficulties identified in this classroom, including the problematic macroscopic-microscopic relationship, the lack of attention to “substance”, and the taken-for-granted temperature conditions. However, the two theoretical perspectives differed in their capacity to accommodate learning at different levels, to address the connection between instruction and learning, and to identify and advocate the likely benefits of particular instructional approaches. Distributed Cognition unfolded the connection between teaching and learning by a careful examination of social interactions and the utilization of artefacts in these interactions. It speculated learning occurring in different types of social configurations and interactions found in a science classroom (e.g. collaborative activities). From the perspective of Distributed Cognition, the inappropriate employment or coordination of resources was the key factor contributing to the limited success in establishing shared understanding among the participants in the classroom. Variation Theory explicitly modelled the connection between instruction and learning through the idea of patterns of variation, and it provided some general principles to evaluate the teaching of a specific topic. From the perspective of Variation Theory, it was the lack of appropriate variation in the key attributes of the object of learning that contributed to the limited success in developing student capability to make differentiations between critical and uncritical aspects of a scientific concept. But current applications of Variation Theory do not include learning occurring in the private domain of the classroom (e.g. student-student interaction) and are silent on the role of collaborative activity (e.g. group work) in learning.The juxtaposition of the parallel analyses showed that the two theories are complementary and mutually informing in their explanations of the documented classroom practice. But their assumptions about what constitutes learning and what contributes to that learning differed from each other. This study suggested that we should focus our attention on the identification of the contingencies of compatibilities in our efforts to combine or synthesize elements of different theories. In this study, the local combination of the results generated from the parallel analyses contributed to a more complete understanding of science learning as it occurred in the classroom.The findings of this study should inform science teaching, curriculum development, and instructional design of science classrooms. It also generated implications for research into science classrooms and suggested the need for the science education community to examine the role of theory and the relationship between theoretical choice and analytical results obtained through the employment of a particular theory.

The loss of memory can have a profound and disabling effect on individuals. People who acquire memory impairments are often unable to live independent lives because they cannot remember what they need to do. In many cases, they rely on family members who live with them. When I carried out ethnographic fieldwork to explore this domain, I observed that individuals with amnesia were surrounded by family members who provided extensive memory support (e.g. reminders). I found that such families very worked closely together to accomplish everyday activities, such as coordinating a family outing or planning a doctor’s appointment. However, these activities were often undermined by family members forgetting. This led me to view memory aids as collaboration technology, rather than as tools that only support an individual’s memory. My dissertation explores this idea and how it can lead to more appropriate designs of assistive technology. To design collaborative assistive technology, I involved persons with amnesia and their family members in a process of participatory design. The design team included six individuals with amnesia, two neuropsychologists, and myself. Five family members were also involved in later stages. This team envisioned the design of a shared calendar application, called Family-Link, that I implemented for Palm mobile devices. I evaluated Family-Link by comparing it to the commercially available Palm Calendar in a six-month study with four families. I found that participants had significantly more shared events when using Family-Link than when using Palm Calendar. Qualitative evidence suggests that Family-Link increased all participants’ awareness of other family members’ schedules, provided caregivers with a greater a sense of security by enabling them to track their family member with amnesia, and reduced the amount of effort that caregivers needed to coordinate. Family-Link also fulfilled the individual needs of persons with amnesia by providing an information storage and retrieval mechanism. However, persons with amnesia and caregivers differed in their opinions about which features were useful. Family-Link can be a particularly important tool for families where members are not co-located throughout the day.

The loss of memory can have a profound and disabling effect on individuals. People who acquire memory impairments are often unable to live independent lives because they cannot remember what they need to do. In many cases, they rely on family members who live with them. When I carried out ethnographic fieldwork to explore this domain, I observed that individuals with amnesia were surrounded by family members who provided extensive memory support (e.g. reminders). I found that such families very worked closely together to accomplish everyday activities, such as coordinating a family outing or planning a doctor’s appointment. However, these activities were often undermined by family members forgetting. This led me to view memory aids as collaboration technology, rather than as tools that only support an individual’s memory. My dissertation explores this idea and how it can lead to more appropriate designs of assistive technology. To design collaborative assistive technology, I involved persons with amnesia and their family members in a process of participatory design. The design team included six individuals with amnesia, two neuropsychologists, and myself. Five family members were also involved in later stages. This team envisioned the design of a shared calendar application, called Family-Link, that I implemented for Palm mobile devices. I evaluated Family-Link by comparing it to the commercially available Palm Calendar in a six-month study with four families. I found that participants had significantly more shared events when using Family-Link than when using Palm Calendar. Qualitative evidence suggests that Family-Link increased all participants’ awareness of other family members’ schedules, provided caregivers with a greater a sense of security by enabling them to track their family member with amnesia, and reduced the amount of effort that caregivers needed to coordinate. Family-Link also fulfilled the individual needs of persons with amnesia by providing an information storage and retrieval mechanism. However, persons with amnesia and caregivers differed in their opinions about which features were useful. Family-Link can be a particularly important tool for families where members are not co-located throughout the day.