Jonas Ivarsson

Map Reading Versus Mind Reading

Any study pursuing questions of conceptual development has to position itself with respect to the more general questions of how to conceive human cognition. At one level this study thus presents a contribution to this age-old debate about the nature of human thinking and learning. At another level — the empirical — it pro vides a discussion ofthe difficulties that children face when reasoning about the shape of the earth and gravity. The study reported is part of a project that explores issues of how people use physical artefacts, embodying conceptual distinctions of considerable complexity, when thinking and reasoning.

Developing the construction sight: Architectural education and technological change:

The general thrust of this study is exploratory. With an interest in the development of competence, and, the achievement of professionally purposeful action — as this is done by way of digital technologies — the study exploits the details of a single collaborative design/learning activity among students of architecture. The provided analysis aims at informing the discussion on the role of technically mediated visual reasoning for the emerging professional vision of the to-be architects. By demonstrating the performance of visually complex actions and events — events and actions that could not have occurred outside the particular medium used — the study raises some principled issues. The first issue pertains to the problem of separating the analytical work made by the students from the tools and other resources that enable this work. The second issue concerns how the use of the technology generates new ways of seeing, showing and doing architecture.

Learning aspects and potential pitfalls regarding detection of pulmonary nodules in chest tomosynthesis and proposed related quality criteria.

Background In chest tomosynthesis, low-dose projections collected over a limited angular range are used for reconstruction of an arbitrary number of section images of the chest, resulting in a moderately increased radiation dose compared to chest radiography. Purpose To investigate the effects of learning with feedback on the detection of pulmonary nodules for observers with varying experience of chest tomosynthesis, to identify pitfalls regarding detection of pulmonary nodules, and present suggestions for how to avoid them, and to adapt the European quality criteria for chest radiography and computed tomography (CT) to chest tomosynthesis. Material and Methods Six observers analyzed tomosynthesis cases for presence of nodules in a jackknife alternative free-response receiver-operating characteristics (JAFROC) study. CT was used as reference. The same tomosynthesis cases were analyzed before and after learning with feedback, which included a collective learning session. The difference in performance between the two readings was calculated using the JAFROC figure of merit as principal measure of detectability. Results Significant improvement in performance after learning with feedback was found only for observers inexperienced in tomosynthesis. At the collective learning session, localization of pleural and subpleural nodules or structures was identified as the main difficulty in analyzing tomosynthesis images. Conclusion The results indicate that inexperienced observers can reach a high level of performance regarding nodule detection in tomosynthesis after learning with feedback and that the main problem with chest tomosynthesis is related to the limited depth resolution.

How gamers manage aggression: Situating skills in collaborative computer games

In the discussion on what players learn from digital games, there are two major camps in clear opposition to each other. As one side picks up on negative elements found in games the other side focuses on positive aspects. While the agendas differ, the basic arguments still depart from a shared logic: that engagement in game-related activities fosters the development of behaviors that are transferred to situations beyond the game itself. With an approach informed by ethnomethodology, in this paper we probe the underlying logic connected to studies that argue for such general effects of games. By focusing on proficient gamers involved in the core game activity of boss encounters in a massively multiplayer online game, we examine the fundamentals that must be learnt and mastered for succeeding in an ordinary collaborative gaming practice where aggression is portrayed. On the basis of our empirical analysis we then address the contentious links between concrete instances of play and generic effects. As expected, the results point to “aggression” as well as “collaboration” as major components in the gaming experience, but our analysis also suggests that the practices associated with these notions are locally tied to the game. Based on these results, we propose that to reverse this relationship and claim that game environments foster collaboration or aggression in general first assumes strong theoretical claims about the nature of cognition and learning, and second, risks confusing the debate with hyperbole.

Kids in zen: computer-supported learning environments and illusory intersubjectivity

The nature of human learning changes as new technologies are introduced. Digital media, with interactive and visually driven learning environments, challenge the traditional, linguistically dominated, mode of communication. At least, this is what is claimed. The study explores a short sequence where a group of students interact with two teachers in the context of a complex learning task dealing with recursion in relation to programming. The results suggest that the mastery of conceptual knowledge that the students develop is tied to local features of the situation that they operate in. The rich environment provides a number of cues that assist the students in handling the task, but there is no indication that the relevant conceptual distinctions are mastered in the manner intended.

Contrasting the use of tools for presentation and critique: Some cases from architectural education

This study investigates video recordings of design reviews in architectural education, focusing on how presentations and discussions of designs are contingent on the specific tools employed. In the analyzed recordings, three different setups are utilized: traditional posters, digital slide-show technologies, and combinations of the two. This range of different setups provides a set of contrasts that make visible the role of technologies in shaping the ways in which the reviews are conducted. The analysis is structured in three themes. First, we examine the sequential organization of digital presentations in relation to the spatial structure of poster-based presentations. Second, the different ways in which shared attention is established in digital, paper-based, and hybrid presentation practices are analyzed. Third, we address part-whole relations—how details in presented materials are put in relation to the overarching project or the presentation as a whole. Taken together, the analyses suggest that the detailed organization of the design review is transformed in subtle yet consequential ways through the introduction of digital slide-show technologies. These transformations are consequential not only locally, for the design review itself, but also for the instructive work that is accomplished through this practice. We conclude by discussing some implications for design, arguing that an increased awareness of how the practice is influenced by the different setups might be key for the proper adaptation of presentation technologies to particular purposes.

Knowing the Way. Managing Epistemic Topologies in Virtual Game Worlds

This is a study of interaction in massively multiplayer online games. The general interest concerns how action is coordinated in practices that neither rely on the use of talk-in-interaction nor on a socially present living body. For the participants studied, the use of text typed chat and the largely underexplored domain of virtual actions remain as materials on which to build consecutive action. How, then, members of these games can and do collaborate, in spite of such apparent interactional deprivation, are the topics of the study. More specifically, it addresses the situated practices that participants rely on in order to monitor other players’ conduct, and through which online actions become recognizable as specific actions with implications for the further achievement of the collaborative events. The analysis shows that these practices share the common phenomenon of projections. As an interactional phenomenon, projection of the next action has been extensively studied. In relation to previous research, this study shows that the projection of a next action can be construed with resources that do not build on turns-at-talk or on actions immediately stemming from the physical body—in the domain of online games, players project activity shifts by means of completely different resources. This observation further suggests that projection should be possible through the reconfiguration of any material, on condition that those reconfigurations and materials are recurrent aspects of some established practice.

Rediscovering radiology: New technologies and remedial action at the worksite

This study contributes to social studies of imaging and visualization practices within scientific and medical settings. The focus is on practices in radiology, which are bound up with visual records known as radiographs. The study addresses work following the introduction of a new imaging technology, tomosynthesis. Since it was a novel technology, there was limited knowledge of how to correctly analyse tomosynthesis images. To address this problem, a collective review session was arranged. The purpose of the present study was to uncover the practical work that took place during that session and to show how, and on what basis, new methods, interpretations and understandings were being generated. The analysis displays how the diagnostic work on patients’ bodies was grounded in two sets of technologically produced renderings. This shows how expertise is not simply a matter of providing correct explanations, but also involves discovery work in which visual renderings are made transparent. Furthermore, the results point to how the disciplinary knowledge is intertwined with timely actions, which in turn, partly rely on established practices of manipulating and comparing images. The embodied and situated reasoning that enabled radiologists to discern objects in the images thus display expertise as inherently practical and domain-specific.

Epistemic status and the recognizability of social actions

Although the production and recognition of social actions have been central concerns for conversation analysis (CA) from the outset, it has recently been argued that CA is yet to develop a systematic analysis of ‘action formation’. As a partial remedy to this situation, John Heritage introduces ‘epistemic status’, which he claims is an unavoidable component of the production and recognition of social action. His proposal addresses the question how is social action produced and recognized? by reference to another question how is relative knowledge recognized? Despite the importance placed on the latter question, it is not clear how it is to be answered in particular cases. We argue that the introduction of epistemic status builds on a reformulation of the action formation problem that unnecessarily de-emphasizes the importance of the sequential environment. Our re-analyses of key sequences cast doubts on the empirical grounding of the epistemic program, and question whether the fundamental role of epistemic status has been convincingly demonstrated.

The Organization of Turn-Taking in Pool Skate Sessions

This study takes pool skating, where only one skater rides at a time, as an example of a turn-taking system, albeit one that is organized not through speech but through bodily actions. This allows us to revisit Sacks, Schegloff, and Jefferson’s (1974) famous “turn taking” paper—in particular, their initial broad conception of turn-taking systems as including activities other than the speech-exchange systems studied by conversation analysis. Despite the original declaration, non-speech turn-taking systems have evaded close scrutiny for the past four decades. By turning our attention to such a system here, this study makes two contributions: firstly, to the sociology of turn-organized activities (through a comparison of the central features of turn-taking for conversation with pool skating) and, secondly, to the study of how bodily actions can accomplish pre-beginnings (since in pool skate sessions, this is the place to settle the matter of turn allocation in order to avoid overlaps in riding).