Presents a simulation which can be used in any secondary social studies course to teach about the Equal Rights Amendment. It can be played with as few as ten and as many as 40 students. Playing time varies from three to seven class periods. (RM)

Six career exploration work simulation units (plumbing, electrical house wiring, photography, brake repair, metal fabrication, and printing) were evaluated with eight mentally retarded adults from a sheltered workshop. Results demonstrated that units designed for nondisabled elementary school children can be used effectively by mentally retarded…

Takes a critical look at past evaluation efforts on business simulation games and suggests some concrete guidelines for meaningful evaluation of such games in the future. Thirteen references are appended. (Author/LLS)

An evaluation of several clustering methods was conducted in which an artificially generated true cluster structure was hidden by the addition of various errors. Results for hierarchical models were mixed, but two nonhierarchical procedures produced satisfactory recovery of clusters and sufficient robustness with respect to various error types.…

The designers of a game to raise consciousness on women's issues are interviewed. (BD)

Developed a full maximum likelihood method for obtaining joint estimates of variances and correlations among continuous and polytomous variables with incomplete data that are missing at random with an ignorable missing mechanism. Simulation results and an empirical example illustrate the approach. (SLD)

Four theories of the human conceptual system--semantic memory, exemplar models, feed-forward connectionist nets, and situated simulation theory--are characterized and contrasted on five dimensions. Empirical evidence is then reviewed for the situated simulation theory and conclusions are discussed. (Author/VWL)

Discusses the use of inverted files in information retrieval systems and proposes a document identifier reassignment method to reduce the average gap values in an inverted file. Highlights include the d-gap technique; document similarity; heuristic algorithms; file compression; and performance evaluation from a simulation environment. (LRW)

Studied the Type I error rate and the power of a number of new and existing tests of fit to the three-parameter logistic model. Simulation study results show that all the tests except one have a Type I error rate acceptably close to the nominal significant level and good power to detect the model violations at which they are targeted. (SLD)

Proposed and evaluated a modified version of the maximum Fisher information (MFI) criterion called the nearest-neighbors (NN) criterion. Simulation study results show that NN procedure improved to a moderate extent the undesirable item exposure rates associated with the MFI criterion and keeps sufficient precision in theta estimates. (SLD)

Studied a multiple group model with ordinal categorical observed variables that are manifestations of underlying normal variables. Proposed to apply across-group stochastic constraints on thresholds to identify the model and used a Bayesian approach to analyze the model. Simulation findings and the analysis of a real data set show the usefulness…

Developed a method, based on the conditional maximum likelihood principle, for establishing latent change classes in dichotomous data. Simulation studies and a real data set from an earlier study illustrate the method of parameter estimation. (SLD)

Developed methods for testing whether or not patterns of incomplete data represent samples from a single population. Results from a simulation study show that the generalized least squares test of homogeneity of means performed close to an ideal Type I error rate for most of the conditions. The generalized least squares test of homogeneity of…