Ethnographic study of science lab technicians' troubleshooting suggests that they possess most of a lab's contextual knowledge and skill and play a critical role in the production of scientific knowledge. However, because contextual knowledge is less valued than formal knowledge, technicians experience status inconsistencies. (SK)

Troubleshooting in a practice situation requires two types of information, namely for reasoning about the problem-cause and for finding an adequate solution ("declarative information") and for manipulating the environment ("procedural information"). It is hypothesized that presenting this information piece-by-piece during practice (i.e.,…

Discusses a case study of a project created for the U.S. Air Force, Air Combat Command, in which mental models were taught, reinforced, and assessed as the foundation for instruction. Preliminary data for 183 students reflected a 93% mastery level and a 79% cumulative gain in students' ability to troubleshoot difficult problems. (Author/AEF)

Student modeling--the task of building dynamic models of student ability--is fraught with uncertainty, caused by such factors as multiple sources of student errors, careless errors and lucky guesses, learning and forgetting. Within the context of the Sherlock intelligent tutoring systems project, we have been experimenting with various ways of…

Describes the cognitive processes required to troubleshoot faults and describes an architecture based on that cognitive model for designing learning environments that engage novices in troubleshooting while supporting their construction of requisite knowledge. This model can be applied to different kinds of troubleshooting problems, enhancing the…

This paper encourages the use of Total Quality Management (TQM) tactics and other strategies as a practical means of fostering a quality culture in institutional research offices of higher education institutions. In particular, four approaches are advocated for understanding and minimizing errors: (1) use of TQM tactical tools to enhance work…

In computer-based simulations, students must bring a wide range of relevant knowledge, skills, and abilities to bear jointly as they solve meaningful problems in a learning domain. To function effectively as an assessment, a simulation system must additionally be able to evoke and interpret observable evidence about targeted knowledge in a manner…

A mental model is a knowledge structure composed of concepts and the relations between them. Mental models are distinct from declarative and procedural knowledge--they go beyond semantic relationships and skills acquisition and contain varied intellectual skills and knowledge. This study describes an initial investigation into the construct…

Thirty six senior students in chemical engineering were randomly assigned to three treatment groups in an experimental study that examined the impact of different instructional strategies for troubleshooting malfunctions in a computer-based simulation of a chemical processing plant. In two groups, different types of worked examples,…

One of a series of workplace education modules, this 6-week module presents activities and materials designed to lead participants through a systematic approach to problem-solving in the workplace. Following a brief overview, indicating that the module emphasizes five phases in problem-solving (i.e., using key problem-solving concepts, identifying…

An effective training program for preparing troubleshooters provides knowledge needed to understand the technology, teaches the process of troubleshooting, and provides the opportunity to practice using their knowledge and skill to diagnose faulty equipment. Recent research and common sense indicate many troubleshooting programs overemphasize…

Review of research and development on the design of computer-based simulation for diagnostic training highlights the development and evaluation of eight diagnostic training systems that explored the appropriate level of student modeling needed for technology training. Topics addressed include changes in interface design, displays, and system…

Several studies have shown the difficulties students encounter in making sense of situations involving rate of change. This study concerns how students discover errors and refine their knowledge when working with rate of change. The part of the study reported here concerns the responses of four precalculus students to a task which asked them to…

This guidebook focuses on the problems facing teachers in small group teaching. It is organized in three parts, each dealing with a specific common problem. Part One deals with clarifying instructional goals for the group. Part Two concerns interaction within the group and between the students and the teacher. Part Three encompasses the…

This study compared the effectiveness and efficiency of trainees in the Onan small products gasoline course under two training curricula: (1) the control group curriculum was the in-place course on the Emerald generator set; and (2) the experimental group curriculum was essentially the same with the addition of one lesson based on methods used by…