Thomas M. Schwen

Community of Practice: A Metaphor for Online Design?

This article examines four cases and identifies several issues associated with the concept of communities of practice. These cases describe different forms of communities of practice in various settings including consulting firms and legal firms. After introducing these cases, we address several issues that emerged from these cases and the research literature. First, we caution against the tendency to romanticize the communities of practice construct and especially online communities. The cross-case analysis points to five problems that should be considered before developing an online community of practice. These five problems include: prescriptive versus description distinction; ready-made versus communities in the making; knowledge of possession versus knowing in practice; mid-level social theory versus micro learning theory; and motivated members versus unwilling subjects. In sum, we believe that community of practice is not likely to be forced, but is emerging, and designers need to be aware of the characteristics of existing communities of practice to nurture them.

Potential Knowledge Management Contributions to Human Performance Technology Research and Practice.

This article considers three aspects of the knowledge management (KM) literature that have the potential to enhance human performance technology (HPT) research and practice. First, we believe the recent attempt by economists to describe and quantify intellectual capital can help HPT to better evaluate and defend organizational expenditures/investments for performance improvement initiatives. Second, the emerging KM literature explores the linkages between information, learning and performance, provides a common point of intersection for our fields, and can enhance our analysis and implementation of information (as opposed to training) solutions as well as inform and expand our conceptual and theoretical understanding. Third, we have observed that both KM and HPT practitioners are increasingly concerned with the learning that takes place outside the confines of traditional formal training environments. We briefly review the electronic performance support systems literature from HPT and KM, noting the similarities in epistemology, design, and interventions. Finally, we highlight the KM research agenda and suggest related opportunities for HPT research.

The effects of structural cues from multiple metaphors on computer users' information search performance

Since the 1980s metaphors have been used to design computer interfaces in order to facilitate user learning. As computer systems become more complex, the issue of using a large number of metaphors of narrow scope to design interfaces has arisen. Several researchers have proposed the use of multiple metaphors in the design of computer systems. This study set out to compare the effects of structural cues derived from single versus multiple metaphors used in designing hypertext systems. A total of 54 undergraduate students were asked to perform selected information search tasks. The results show that the provision of metaphorical cues helped subjects to find a greater number of accurate answers in a shorter period of time. The more complete mapping between the base and target domains in the design of the interface, along with cues from multiple metaphors, may have helped subjects to develop more sophisticated representations of the hypertext structure.

Mental Representation-Based Task Analysis for Analyzing Value-Laden Performance.

In keeping with recent research findings in the areas of constructivist learning and affective mediation of complex behavior, the authors assert that the conduct of task analysis should reflect the holistic nature of this performance. Although a common practice in special education is for teachers to instruct parents on how to teach exceptional children at home, the differing values that teachers and parents hold regarding the “best practice” for the children often lead to strikingly different implementations of the same teaching approach. Using knowledge representation theory, we attempt to better understand how and why such discrepancies happen. In this paper we explore the theoretical dimensions of a modified task analysis model that purports to integrate cognitive-affective-behavioral dynamics underlying teacher and parental teaching behaviors. Applied in a qualitative study conducted in a special educational program in Taiwan, this model reveals the differences between teachers’ and mothers’ mental representations of teaching at the (a) conceptual orientation, (b) values, (c) reasoning, and (d) behavioral levels. With more applied research, we believe that this model will help trainers and trainees to reach a better understanding of the cognitive and psychological roots of complex value laden performance.

Effects of three algorithmic representations on critical thinking, laboratory efficiency, and final grade

Does the way instructions for carrying out elementary operations are presented affect the time required to complete those procedures, student’s critical thinking ability, and student’s final grade? This investigation sought answers by presenting prescriptions — or algorithms — in three ways to university students in an introductory laboratory-chemistry course. Differences in the effects of the three representation modes — flow charts, lists, and standard prose — were complex and changed over the 10 lab sessions. There was no evidence that representation mode affected either critical thinking ability or final grade.

The interaction of learner aptitudes with instructional treatment in quadratic inequalities

Many questions remain to be answered about the role of individual differences in learning. In the area of mathematics learning, do spatial and general reasoning abilities interact with instructional treatment? This study extends a series of earlier studies examining the interaction between aptitudes and instructional treatment. One treatment was strong in verbal-pictorial-numeric content; the other treatment was strong in verbal-symbolic-numeric content. Interactions between instructional treatment and the aptitudes are reported.