Modifications are proposed to the recently developed method of comparing one-step M-estimators of location corresponding to two independent groups that provides good control over the probability of Type I error even for unequal sample size, unequal variances, and different shaped distributions. Simulation results reveal cautions required. (SLD)

Describes shortcomings of computer science/engineering education and explains a new focus on informatics. Highlights include simulation, visualization, algorithmization, design of information processing models, parallel computing, a history of informatics, informatics versus physics and mathematics, and implications for education. (51 references)…

Four blind adults explored the spatial layout of landmarks in a large-scale space utilizing a microcomputer simulation of the environment and a tactile graphic aid of a similar environment. Although subjects learned the landmarks' locations faster using the tactile graphic aid, the accuracy of their spatial knowledge was equal with both…

Discussion of design principles in creating interactive video simulations for second-language learning focuses on two interactive video simulations on the Eurocentres Videodisc (ECVD). Four design principles are explained, instructional procedures involved in the ECVD are described, and learners' reactions are discussed. (four references) (LRW)

A sample of 72 students tested manufacturing simulation software about production planning. The package enriched learning, although compared to lecture only, no clear-cut advantages were perceived. Amount of time between lecture and lab experience did not affect learning or retention. (SK)

One-parameter and three-parameter item response theory (IRT) model estimates were compared with estimates obtained from two modified one-parameter models that incorporated a constant nonzero guessing parameter. Using small-sample simulation data (50, 100, and 200 simulated examinees), modified 1-parameter models were most effective in estimating…

Large scale studies of the psychometric characteristics of standardized-patient clinical examinations are reviewed, and recommendations for test improvement are offered, including (1) assessment of history taking, physical examination, and communication skills separately from diagnostic and management skills; (2) a mastery-testing framework for…

A review (HE 528 450) of large-scale studies of the psychometric characteristics of standardized-patient clinical examinations is commended for its clarity, thoroughness, and relevance. Issues of reliability, validity, scoring, reporting, and use of the tests are discussed further. (MSE)

Automated evaluation methods, used in medical school training programs, are discussed. The use of situational questions which help students to make connections between the biochemical knowledge acquired and its application in medical practice is proposed. Examples of these types of questions are included. (KR)

Describes a simulation method for estimating recall and fallout in a document retrieval system. Earlier research on simulating document retrieval systems is reviewed, examples are presented of the current method, a probabilistic justification of the method is given, theoretical concerns dealing with retrieval precision are discussed, and further…

Law students were asked to simulate, in writing, the thinking of a lawyer advising a client. Scripts produced by students and teachers revealed a pattern of repeated syllogisms, or an algorithm, contained within the macrostructure of situation-problem-solution. Variation depended upon the issues discussed or type of law studied. (28 references)…

A study investigated the performance of 6 successive medical school classes on 80 standardized-patient case examinations, looking for effects of student or standardized-patient gender on scores. Results showed no interaction of any practical consequence. Cases with gender-related concern (e.g., breast problems) also did not differentiate between…

A study investigated whether the more efficiently graded extended-matching questions were equivalent to short-answer questions in evaluating medical students' (n=98) ability to elicit physical findings and generate diagnoses and treatment plans, using standardized-patient examinations. The differences found in the two question types did not favor…

The University of Illinois' National Center for Supercomputing Applications, a cooperative effort of the National Science Foundation, University of Illinois, the state, and industry, offers training and support services in the use of technologically advanced computing for scientific research. The computers simulate physical phenomena that are…

Using simulated and real data, this study compares the performance of three methodologies for assessing unidimensionality: (1) DIMTEST; (2) the approach of Holland and Rosenbaum; and (3) nonlinear factor analysis. All three models correctly confirm unidimensionality, but they differ in their ability to detect the lack of unidimensionality.…