A metric multidimensional scaling (MDS) procedure based on computer-subject interaction is developed, and an experiment designed to validate the procedure is presented. (Author)

To reduce the cost of in-the-school experiment, this study, which is an attempt to quantify redundancy in a learning situation, was carried out using a numerical procedure. The variables include student I.Q., lesson time, wasted time, teacher experience, and redundancy. (Author/CB)

Paper is concerned with the hypothesis that two variables have a perfect disattenuated correlation, hence measure the same trait except for errors of measurement. (Author/RK)

A model with only ten or twenty decision variables can be more instructive than large scale cost simulation models. Research efforts should concentrate on understanding the order-of-magnitude effects of proposed policy changes on various indicators of system performance. (Author/VW)

Supports hypothesis that students are influenced by monetary returns to their educational investment. (Editor/AG)

Teacher adopts standards of measurement as an incentive toward understanding non-standard concepts and as a way of teaching children to work together. (RK)

With the aid of the programmed computer, the systems designer can analyze systems for which certain components have not yet been manufactured or even invented, and the power of solution-technique is greatly increased. (IR)

This paper proposes a general model for free-response data collected for measuring a specified unidimensional psychological process; systematizes situations which vary with respect to the scoring level of items; and finds out general conditions for the operating characteristic of an item response category to provide a unique maximum likelihood…