A Monte Carlo study determined the Inverse Scree Test's shape with various numbers of true groups and under different conditions of distribution shape and sample size. Six simulated distributions of 3,000 subjects each and 1 with 1,500 were created. Findings suggest relative distribution independence, number independence, and modest…

Describes a two-stage experiment that was designed to explain binomial distribution to undergraduate statistics students. A manual coin flipping exercise is explained as the first stage; a computerized simulation using MINITAB software is presented as stage two; and output from the MINITAB exercises is included. (two references) (LRW)

Presents a framework identifying the molecular level assumptions underlying many thermodynamic models. Tests the assumptions using theory and computer simulation to develop better assumptions. (YP)

Describes a model for the workload of a full text retrieval system and of a simulation model for a version of an existing system called Full/Text. The effectiveness of various data caching strategies using the 2 models are explored, and the impact of various parameters on the strategies are evaluated. (13 references) (LRW)

Some effects of using unidimensional item response theory (IRT) were examined when the assumption of unidimensionality was violated. Adaptive and nonadaptive tests were used. It appears that use of a unidimensional model can bias parameter estimation, adaptive item selection, and ability estimation for the two types of testing. (TJH)

Simulation techniques were used to generate conventional test responses and track the proportion of alternatives examinees could classify independently before and after taking the test. Finite-state scores were compared with these actual values and with number-correct and formula scores. Finite-state scores proved useful. (TJH)

General guidelines are developed to assist practitioners in devising operational computerized adaptive testing systems based on the graded response model. The effects of the following major variables were examined: item pool size; stepsize used along the trait continuum until maximum likelihood estimation could be calculated; and stopping rule…

Discusses the extent to which computers can understand natural language. Considers assertions that computers can be described as literate, and considers more generally the purpose of designing machines which perform like humans. (RS)

Explores a method of combining convention and intention by representing conversation structure with conversation MOPs (schematic structures that store conversation rules as generalized episodes associated with goals the episodes achieved). Discusses how conversation MOPs process the opening portion of a dialogue in an interactive advice-giving…

Investigates the growing popularity of computerized economic modeling as a computer-assisted instructional aid and the associated educational benefits. Provides an overview of current modeling, simulation, and econometrics programs and attempts to identify trends in computer-assisted instruction in economics. (Author/GEA)

The purpose of this study was to determine differences in learning outcomes of students taught computer applications through supervised laboratory instruction versus video simulation. No differences were observed for time required to complete an application, proper use of commands, or retention of the learned application. (Author)

Describes the application of case analysis to a learner-centered microcomputer-based instructional model. Topics discussed include the use of computer-based case analysis with adult students; case planning; and two sample cases, one a decision-making model and one a technical model. (21 references) (LRW)

Provides commentaries on professional and personal experiences in the development of simulations in the study of international affairs. Describes the evolution in Simulated International Processes projects from a person-machine format to an all-computer simulation. Discusses work with the military, field work, teaching experiences, difficulties,…

This simulation investigated two procedures that reduce differences between paper-and-pencil testing and computerized adaptive testing (CAT) by making CAT content sensitive. Results indicate that the price in terms of additional test items of using constrained CAT for content balancing is much smaller than that of using testlets. (SLD)

The interact simulation environment has the potential to overcome problems associated with simulations by improving the lack of cost effectiveness, providing online guidance to students, and tailoring the supporting material to suit a wide range of contexts. Results show a flexible teaching and learning environment allows for teacher creativity.…