Two sets of real sorting data from 50 college students are used to compare results of multidimensional scaling of raw co-occurrence frequencies or dissimilarity measures (D) and profile distances (delta) to determine which yields a better representation of the underlying structure of 2 sets of stimuli. Slight differences are discussed. (SLD)

A Monte Carlo study explores the robustness assumption in structural equation modeling of using a full information normal theory generalized least-squares estimation procedure on Type I censored data. The efficacy of the following proposed alternate estimation procedures is assessed: asymptotically distribution free estimator and a latent…

Discussion of educational computer simulations focuses on the parallel instruction theory that was developed at the University of Twente to combine the simulation with instructional materials, including those that may be printed. The MacTHESIS design system and philosophy are discussed, and simulation and learning environments based on the…

Elementary computer teacher describes a summer program in which fifth graders cooperatively created a computer-based city planning unit. Students strengthened math, writing, technology, and problem-solving skills as they organized and used a bank, purchased property, proposed and designed buildings, and assembled the futuristic city using a…

Considers the role of educational technology in two views of the school reform movement: one that demands more from the existing educational system, and one that calls for restructuring of the existing system. The effectiveness of technology is addressed, models for technology use are described, and technology and constructivism are discussed. (31…

Describes microcomputer-based courseware designed for the simulation of the microbiological analysis of drinking water, including digitalized color images. The use of HyperCard is described and evaluation procedures are explained, including evaluation of the learning and of the class. The evaluation questionnaires are appended. (20 references)…

The regression-discontinuity design involving a treatment interaction effect (TIE), pretest-posttest functional form specification, and choice of point-of-estimation of the TIE are examined. Formulas for controlling the magnitude of TIE in simulations can be used for simulating the randomized experimental case where estimation is not at the…

Discusses various aspects of multimedia instruction, including differences in goals from those of computer-assisted instruction; guidelines for the successful use of interactive multimedia instruction; the use of multimedia lessons in an introductory chemistry course; applications of multimedia instruction for indexing, hypermedia, simulations,…

An experimental class in introductory statistics (n=40) using simulation software at American University was compared to a traditionally taught control group (n=36) with respect to achievement and accrued beliefs about the benefits of the simulations. Results indicate significantly higher achievement scores for the experimental class with about…

Students' views of science as static, mixed, and dynamic are characterized. The relationship between views of science and acquisition of integrated understanding of thermodynamics is examined. Students with dynamic views acquired more integrated understanding than those with static views. Data were collected from 153 middle school students who…

Probability theory can be developed from a theoretical or experimental probability approach. The problem, "The Gambler's Ruin," is used to study whether students are naturally sensitive to learning probability from an experimental probability approach through simulations. Results indicated that use of simulations can contribute to…

A hypermedia computer program that uses text, graphics, sound, and animation with associative information linking techniques to teach the functional anatomy of a rat is described. The program includes a nonintimidating tutor, to which the student may turn. (KR)

The development of a computer program, called UC SIGNAL, that permits a student to develop a diagram of a control system configuration using an IBM AT or a PS/2 computer is described. The features of UC SIGNAL and its contribution to process control instruction are discussed. (KR)

A two-stage procedure for estimating item bias was examined with six indices of item bias and the Mantel-Haenszel statistic. Results suggest that the two-stage procedure is not very useful when the number of biased items is small and bias magnitude is weak. (SLD)

Effects of the following variables on performance of computerized adaptive testing (CAT) procedures for the partial credit model (PCM) were studied: (1) stopping rule for terminating CAT; (2) item pool size; and (3) distribution of item difficulties. Implications of findings for CAT systems based on the PCM are discussed. (SLD)