Sim One is a computer-controlled patient, a sophisticated simulator developed by the University of Southern California School of Medicine. This article summarizes fifteen cost-effectiveness studies conducted over a 2-year period. Savings with the use of Sim One were found to justify the cost within a short period. (JT)

Describes an experiment in which the beam of X-rays is simulated through the use of a laser as a monochromatic light source and the crystal is replaced by photographically prepared masks. A strong diffraction pattern as large as 20 cm. can be obtained. (GS)

Arguing that operations research is not as difficult and forbidding as its reputation implies, and that many problems lend themselves to analysis using common sense, the author provides examples which might be used in a secondary school classroom. (SD)

The teacher developed audit simulation takes the student away from the textbook into the real work situation. (BP)

The purpose of this simulation is to develop in students an awareness of a fundamental legal principle: that procedure is the essence of justice. (Author)

By using a computer to simulate experimental situations, engineering laboratory courses can provide more ambitious experiments as well as experiments demanding more calculations. (SD)

A course in applied statistics for social science students provides for students designing experiments at an interactive terminal. (SD)

Simulates the problems of rocket propulsion, hovering, and soft landing. (GS)

A computer network serves 53 schools and colleges in North Carolina; Essex County College in New Jersey has an on-line computer registration system that is used by students and administrators to enter information or ask questions. (Author/MLF)

Lord's bias function and the weighted likelihood estimation method are effective in reducing the bias of the maximum likelihood estimate of an examinee's ability under the assumption that the true item parameters are known. This paper presents simulation studies to determine the effectiveness of these two methods in reducing the bias when the item…

It is a widely held belief that an anchor test used in equating should be a miniature version (or "minitest") of the tests to be equated; that is, the anchor test should be proportionally representative of the two tests in content and statistical characteristics. This paper examines the scientific foundation of this belief, especially…

Bayesian network models offer a large degree of flexibility for modeling dependence among observables (item outcome variables) from the same task that may be dependent. This paper explores four design patterns for modeling locally dependent observations from the same task: (1) No context--Ignore dependence among observables; (2) Compensatory…

Using computer simulated games as a teaching tool has effected an attitude change among students and may be a possible solution to the problems of negative attitudes of students towards business careers in marketing. (Author/BP)

A mock trial offers a situation for students to learn about the Federal Trade Commission, about deceptive advertising practices, and about identification of misleading advertisements. (Author/KM)