Performance of the logistic regression (LR) procedure was compared to that of the Mantel Haenszel (MH) procedure in the detection of uniform and nonuniform differential item functioning on a simulation examining distributional properties of the LR and MH test statistics and the relative power of the two procedures. (SLD)

A class of models is presented for gamma distributed random variables. These additive, multiplicative, and combined additive-multiplicative models are more flexible than classical linear models with respect to the structure that can be imposed on expected values. As a special case, a class of psychometric models for reaction times is presented.…

A computer simulation used in teams by 151 business students tested their ability to translate strategy into decisions. Over eight weeks, the experiential learning activity encouraged strategic decision making and group behavior consistent with long-term strategy. (SK)

Describes a study conducted in undergraduate science classes in Singapore using computer modeling and simulation. Reports that the use of computer models and simulations proved to be valuable in explaining many aspects of science. Students reported that three-dimensional images helped them in their understanding. Contains 22 references.…

Explores economic aspects of digital journal production and delivery using Ithink Analyst, a modeling software package. Three models were developed and simulations were used to monitor the effect of variations in the values of key model elements. Discusses results that show staff costs and overhead are the most substantial costs for scholarly…

Describes a simulated student that learns by interacting with a human tutor. Tests suggest that simulated students, when developed past the prototype stage, could be valuable for training human tutors. Provides a computational cognitive task analysis of the skill of learning from a tutor that is useful for designing intelligent tutoring systems.…

Presents a system for formally characterizing elements of an introductory science class, measuring class performance based on this characterization, and modeling the value of the class based on the measurements. The main components of this modeling system include educational engineering with a formal set of practices, the use of computational…

Describes SIVAS, a computer-based system for driver education based on visual simulation that was developed in Spain to support theoretical concepts about driving in driving schools. Explains how teachers can select pre-built scenarios related to driving lessons in order to make up a lecture. (Author/LRW)

A formative small-group (n12) evaluation of a pair of opposed computer simulations modeling the thinking of historical ideologies (communist insurgency and counter-insurgency) suggests simulations had value in stimulating and modifying assessments of roles within real-world settings. Explores basic objective of having the simulation user develop a…

Demonstrates the use of simulation systems for studying diagnostic problem solving and presents results from two empirical studies in which undergraduates diagnosed faults that occurred in a computer-based, dynamic simulation. Discusses dual problem space search that includes generating and testing hypotheses; suggests implications for designing…

Addresses the problem of benchmarking image browsers. Existence of different search paradigms for image browsers makes it difficult to compare them. Currently, the only admissible evaluation method involves conducting large-scale user studies. An automatic image browser benchmark is proposed that uses structured text annotation of the image…

Discusses the effectiveness of offering science laboratories via distance education. Explains current delivery technologies, including computer simulations, videos, and laboratory kits sent to students; pros and cons of distance labs; the use of spreadsheets; and possibilities for new science education models. (LRW)

This article describes how researchers work with military to create the next generation of training technology. This article also describes the features of Flatworld, a virtual military training technology. Flatworld is one of many projects under development at the Institute for Creative Technologies, a research group that is supported primarily…

For many students macroeconomics is very abstract; it is difficult for them to imagine that the theories are fundamentally about the coordination of human decisions. The author developed a simulation game called Steer the Economy that creates the possibility for students to make the decisions of the firms that are implicit in macroeconomic models.…

In this study, we explore an alternate mode for teaching and learning the dynamic, three-dimensional (3D) relationships that are central to understanding astronomical concepts. To this end, we implemented an innovative undergraduate course in which we used inexpensive computer modeling tools. As the second of a two-paper series, this report…