Marketing students (n=99) used computer simulation, 34 did not. Students who performed well on traditional exams also did well on the simulation. Students who preferred working with others seemed to perform more poorly on both the exam and the simulation. (SK)

The bias and relative efficiency of two alternative estimators of optimal weights in meta-analysis were assessed through Monte Carlo simulation, defining the standardized mean differences as the effect-size index. The estimator proposed by L. Hedges and I. Olkin (1985) was more efficient than that of J. Hunter and F. Schmidt (1990). (SLD)

Standardized patients are subjects who accurately and consistently simulate presentation of medical cases as a method of assessing physician performance. This method is direct, valid, reliable, and feasible when focused on the patient-doctor interaction. (SK)

A Monte Carlo simulation study investigated the effects on 10 structural equation modeling fit indexes of sample size, estimation method, and model specification. Some fit indexes did not appear to be comparable, and it was apparent that estimation method strongly influenced almost all fit indexes examined, especially for misspecified models. (SLD)

Presents a series of simple and inexpensive hands-on activities with a host of extension lesson ideas that can be used to actively introduce students to the scientific theory of evolution. Lessons are designed to thwart common student difficulties. Classes are structured around a predator-prey simulation game that creates a springboard for…

A Rasch-type analysis is presented for multiple-choice items in which one parameter is assigned to each distractor. Results of a small simulation study show that the parameter recovery of the distractor model is very satisfactory. Analysis of a real dataset shows that some items fit the Rasch model rather than the distractor model. (SLD)

Assessed five procedures for estimating a common risk difference in a set of independent 2 x 2 tables through Monte Carlo simulation in terms of bias, efficiency, confidence level adjustment, and statistical power. The maximum likelihood estimator showed best performance, followed closely by the Cochran (W. Cochran, 1954) and Mantel-Haenszel (N.…

Interactive digital video enables computer visualization techniques that help students to collect, analyze, and model two-dimensional motion data. This article describes and evaluates five activities developed for the physics classroom with the use of this technology in mind. Activities explore concepts such as space, time, frames of reference,…

Examines the relationship of team cohesion, participant attitude, and performance expectations to actual performance results in a simulation competition. Findings indicate a strong relationship between beginning team cohesion and performance expectations and final game performance, but little relationship between beginning participant attitudes…

Gaming is discussed against a background of rationalist and historicist traditions of reality; trivial and nontrivial machine models of problem solving; and rigid-rule and free-form games. (JKP)

In a simulation study of ability and estimation of differential item functioning (DIF) in computerized adaptive tests, Rasch-based DIF statistics were highly correlated with generating DIF, but DIF statistics tended to be slightly smaller than in the three-parameter logistic model analyses. (SLD)

Describes a lesson that outlines a statistics/probability investigation into some aspects of past performance in snooker (a billiards game) using the random number generator on a graphing calculator. (MKR)

This update of the International Personnel Management Association's guidelines for organizational psychologists, human resource management specialists, and others addresses elements of assessment centers, policy statements, assessor training, informed participation, and participants' rights. (SK)

Used generalizability theory to assess the impact of using independent, randomly equivalent groups of experts to develop scoring algorithms for computer simulation tasks designed to measure physicians' patient management skills. Results with three groups of four medical school faculty members each suggest that the impact of the expert group may be…

Demonstrates that connectionist models described in "Rethinking Innateness" (Elman, et al., 1996) depend on innately assumed representations and do not offer a genuine alternative to nativism. Presents simulation results showing that the models are incapable of deriving genuine abstract representations that are not presupposed. Maintains…