Cross-validation, an economical method for assessing whether sample results will generalize, is discussed in this paper. Cross-validation is an invariance technique that uses two subsets of the data sample to derive discriminant function coefficients. The two sets of coefficients are then used with each data subset to derive discriminant function…

Describes the development of two interactive computer simulations which were fully integrated with other course materials. The simulations illustrate the effects of various real and monetary "demand shocks" on aggregate income, interest rates, and components of spending and economic output. Includes an evaluation of the simulations'…

Computer sampling from a multivariate normal spherical population was used to evaluate Type I error rates for a test of P = I based on Fisher's tanh(sup minus 1) variance stabilizing transformation of the correlation coefficient. (Author/TJH)

Reviews "The U.S. Constitution Then and Now," a two-unit program using the integrated database and word processing capabilities of AppleWorks. For grades 7-12, the units simulate the constitutional convention and the principles of free speech and privacy. Concludes that with adequate time, the program can provide a potentially powerful…

Results of the two surveys (combined n = 145) show that historians are using computers for word processing, research, and teaching support. Only a third of the respondents indicated they were using computers in the classroom, however. The most frequently reported classroom uses were student projects, simulations, and tutorials. (JDH)

Favorably reviews "The Other Side," a global conflict resolution simulation available for high school social studies classes. Maintains that this program is well worth the time and effort required to integrate it into the study of modern history and international relations. (JDH)

Describes a scheme for the mechanization of fixed-wing, lateral/directional dynamics as demonstrated on the EAI 580 analog/hybrid system. A review of the complete six degrees of freedom program is included, along with useful guidelines of aircraft simulation in the engineering laboratory. (Author/JN)

The ANDS (A Natural Deduction System) model, described in this article, is a psychological theory of propositional reasoning that makes explicit assumptions about memory and control in deduction. A computer simulation of the ANDS model yields proofs similar to those of untrained subjects. (Author/BW)

A computer simulation was designed to expose special educators to some consulting situations. The Mastery Test was given to 19 special educators before and after they completed the simulation. Results indicated that the simulation enabled Ss to choose strategies significantly more like those of expert consulting teachers. (Author/CL)

A computer-based strategy for illustrating the central limit theorem is described which introduces students to the important concept of a simulation model. The computer program is included. (MNS)

This study used computer simulation to provide information on the percentage of students with learning disabilities expected to be identified under different aptitude-achievement discrepancy eligibility models and criteria and to demonstrate the consequential effects in terms of the extent to which the different models identify students of…

A computer simulation study was conducted to determine the feasibility of using logistic regression procedures to detect differential item functioning (DIF) in polytomous items. Results indicate that logistic regression is powerful in detecting most forms of DIF, although it requires large amounts of data manipulation and careful interpretation.…

Used three approaches to understand the effect of the number of variables in the model on model fit in structural equation modeling through computer simulation. Developed a simple formula for the theoretical value of the comparative fit index. (SLD)

Reports results of a controlled experiment to evaluate the effectiveness and efficiency of a learning process that takes place in a dynamic computer-based simulation, done with and without recording and accessing the history of the learning process. Discusses findings with respect to the self-learning process and using simulators in electronic…

Presents an overview of the benefits of applying multimedia technology to redesign and invigorate the career-long performance assessment and professional learning of school leaders. Focuses on the Administrator Case Simulation Multimedia Library (Texas Tech University) as a means of principal assessment and development. (SLD)