Previous work on the effects of dimensionality on parameter estimation was extended from dichotomous models to the polytomous graded response (GR) model. A multidimensional GR model was developed to generate data in one-, two-, and three-dimensions, with two- and three-dimensional conditions varying in their interdimensional associations. Test…

The effectiveness of computer simulation versus laboratory procedures in teaching logic circuits was compared. Also investigated was the sequencing of these activities with a reading assignment. Subjects were 96 undergraduates who were tested using different pretests and posttests. An analysis of variance on the data gathered showed that sequence…

P. O. Johnson and J. Neyman (1936) proposed a general linear hypothesis testing procedure for testing the null hypothesis of no treatment difference in the presence of some covariates. This is generally known as the Johnson-Neyman (JN) technique. The need for the hypothesis testing step (often omitted) as originally presented and the…

This study investigated the robustness of the James second-order test (James 1951; Wilcox, 1989) and the univariate F test under a two-factor fixed-effect analysis of variance (ANOVA) model in which cell variances were heterogeneous and/or distributions were nonnormal. With computer-simulated data, Type I error rates and statistical power for the…

By definition, differential item functioning (DIF) refers to unequal probabilities of a correct response to a test item by examinees from two groups when controlled for their ability differences. Simulation results are presented for an attempt to purify a test by separating out multidimensional items under the assumption that the intent of the…

This Monte-Carlo study compared modified Newton (NW), expectation-maximization algorithm (EM), and minimum Cramer-von Mises distance (MD), used to estimate parameters of univariate mixtures of two components. Data sets were fixed at size 160 and manipulated by mean separation, variance ratio, component proportion, and non-normality. Results…

This paper examines how visual information strategies may be used to facilitate the development of mental models. Topics covered include: definition of mental models; mental models and visual information; mental modeling concepts; power of modeling, including examples related to physical science, mathematics, writing, and depth of processing;…

This catalog contains entries on new and important issues in support of entrepreneurial education in the United States. The bibliography contains five categories of entries: (1) articles; (2) books and reports; (3) curricula and textbooks; (4) videotapes and films; and (5) computer simulations and software. The information is presented in…

This study compared the effectiveness of computer simulation with that of traditional videotaped role playing in a helping skills course for nurses. Subjects were 78 nursing students at the University of Minnesota's School of Nursing who enrolled in a helping relationships course during either the winter or spring quarter of 1987. During each…

While research efforts have determined that decision making is of major importance in lesson planning, there has been little work that systematically explores the effect of training in decision making on lesson planning, particularly in terms of preservice teachers. This study used four computer simulations designed to teach decision making skills…

This report consists of several papers written, but not published, during the course of the WARNET study of requirements for a network of relatively low-cost, interconnected combat simulators for use in training pilots for combat readiness. It is projected that such a network would allow a number of aircraft to fight each other in simulated but…

This study examined how first-year law students developed a civil rights case using an open-ended interactive videodisk ("Litigation Strategies"), which uses a visual and textual database to complement the traditional curriculum by simulating the experience of a junior partner in a law firm. An implementation and formative evaluation…

This master's thesis examines applications of computer technology to the field of industrial design and ways in which technology can transform the traditional process. Following a statement of the problem, the history and applications of the fields of computer graphics and industrial design are reviewed. The traditional industrial design process…

This study was designed to look for patterns of parental behavior by assessing styles of child rearing in a novel way--through responses on an interactive computer program simulating an average day in the life of a mother and a preschooler. Presented to each subject (39 mothers of preschoolers and a control group of non-mothers) were 30 common…

The results obtained from two basic types of pre-equatings of tests were compared: the item response theory (IRT) pre-equating and section pre-equating (SPE). The simulated data were generated from a modified three-parameter logistic model with a constant guessing parameter. Responses of two replication samples of 3000 examinees on two 72-item…