This report presents the results of RAND research conducted at the U.S. Army Signal Center, Fort Gordon, Georgia, to evaluate the effectiveness of an interactive videodisc (IVD) system used to facilitate training in a variety of military occupational specialities. The objectives of the study were to: (1) develop a methodology for assessing the…

This study provides a comparative effect study of the Computer Assisted Teaching and the 7E model of the Constructivist Learning methods on attitudes and achievements of the students in physics classes. The experiments have been carried out in a private high school in Diyarbakir/Turkey on groups of first year students whose pre-test scores of…

Discusses the importance of the use of models in modern science. Suggests that models can make a significant contribution to the teaching of science and mathematics. Explains that representative models, analogue models, logical models, and theoretical models are most commonly used models in science and mathematics. (TW)

This annotated listing provides information on 23 microcomputer programs in the areas of career/vocational information, college and financial information, and job-seeking skills. Information provided for each program includes the title, appropriate level for use (children to adult), availability, hardware required, and a brief description. (CDD)

This study provides a comparative effect study of the Computer Assisted Teaching and the 7E model of the Constructivist Learning methods on attitudes and achievements of the students in physics classes. The experiments have been carried out in a private high school in Diyarbakir/Turkey on groups of first year students whose pre-test scores of…

This article is a review of the impact upon science learning of classroom and laboratory uses of computers in grades K-16 as revealed by published, peer-reviewed research from 1988-95. Highlights include problems with media-comparison studies, computer-assisted instruction, computer simulations, microcomputer-based laboratories, interactive video,…

Contends that an important goal in history instruction is helping students understand the complexity of events. Describes the use of "Escalation," a commercially available computer simulation, in a high school U.S. history class. Includes excerpts from student journals kept during the activity. (CFR)

This study examines the effect of the "Technical Troubleshooting Tutor," a computer-coached training program, on aircraft electrical system troubleshooting. Performance ability differences between control groups are noted, and troubleshooting models and flow diagram examples are included. The study demonstrates the possibilities for…

This second report on a two-part study on the application of informetrics to information retrieval (IR) system design used models of database contents in a factorial simulation study at the University of Western Ontario. The study explored whether different file structures were better suited for different informetric environments. (32 references)…

Based on the exploratory study of a 3D multiuser virtual environment (3D MUVE), known as Quest Atlantis (QA), in a series of Primary Four (10- to 11-year-olds) Science lessons at Orchard Primary School in Singapore, this paper examines the issues of learning engagement and describes the socio-cultural context of QA's implementation. The students…

The work of R. MacCallum et al. (1992) was extended by examining chance modifications through a Monte Carlo simulation. The stability of post hoc model modifications was examined under varying sample size, model complexity, and severity of misspecification using 2- and 4-factor oblique confirmatory factor analysis (CFA) models with four and eight…

This repeated measures factorial design study compared the results of two procedures for identifying multivariate outliers under varying conditions, the Mahalanobis distance and the Andrews-Pregibon statistic. Results were analyzed for the total number of outliers identified and number of false outliers identified. Simulated data were limited to…

Sequential probability ratio testing (PRT), which usually is applied in situations requiring a decision between two simple hypotheses or a single decision point, is extended to include situations involving k decision points and [(k + 1)-choose-2] sets of simultaneous, simple hypotheses, where k>1. The multiple-decision point or…

The rank transformation approach to analysis of variance (ANOVA) as a solution to the Behrens-Fisher problem was examined. Using simulation methodology, four parameters were manipulated for the two-group design: (1) ratio of population variances; (2) distribution form; (3) sample size; and (4) population mean difference. As a general solution to…

The predicted scores produced by regression with (1) single best predictor, (2) two best predictors, (3) all predictors with observed values, and (4) all predictors with or without observed values were compared with variable means as estimates of missing values. The study was conducted in a simulation mode on nx8 data matrices using various levels…