The Simu-School Program and the National Center for Educational Planning were conceived because of the need for (1) expertise in educational planning, (2) a system to collect and assemble the vast amount of knowledge concerning education, (3) community involvement in planning, and (4) a system to accurately interpret today's data in planning for…

This paper has two main purposes. First, it examines verbal, nonverbal, reading, mathematical, and general informational achievement. Second, it estimates the achievement equations of a simultaneous equations model of the educational process. The report, "Equality of Educational Opportunity," (EEOR) acted as a watershed for research into…

Several computer programs were developed to solve various versions of the quadratic capacitated facilities location problem. Matrices, which represent various business costs, are defined for the factors of sites, facilities, customers, commodities, and production units. The objective of the program is to find an optimization matrix for the lowest…

This investigation compares overt judgments about tenable hypotheses to choices in a concept identification task, as a function of stimulus similarity on successive trials. Two mathematical models are tested: (a) A 1-element local consistency version of Restle's concept identification model and (b) the same model with two additional passive states…

The feasibility of using a particular simulation as (1) an aid in management, (2) a management training device, (3) a tool for management research is reported. Corresponding interfaces for the simulation are described and discussed in terms of the way they represent the activity for the user. Estimated costs are reported for alternative…

Previous studies have focused almost exclusively on the contribution of community and institutional traits to institutional success. This study indicates that the degree of institutional effectiveness in serving local educational needs may be predicated more on manipulatable institutional policies and practices affecting educational barriers than…

Marascuilo and Levin's (1970) notion of Type IV errors is extended, with respect to the interpretation of interactions in analysis of variance (ANOVA) designs. To help clarity what an interaction is and what it is not, in terms of the ANOVA model, the following points are made: (i) interactions should be thought of as linear contrasts involving…

An attempt is made to indicate why the concept of "true score" naturally leads to the belief that test validity must increase with an increase in test and/or average item reliability, and why this is correct for the classical single-factor model first introduced by Spearman. The statistical model used by Loevinger is introduced to…

We concern ourselves with the hypothesis that two variables have a perfect disattenuated correlation, hence measure the same trait except for errors of measurement. This hypothesis is equivalent to saying, within the adopted model, that true scores of two psychological tests satisfy a linear relation. Statistical tests of this hypothesis are…

Literature in the area of measurement of comprehensibility is reviewed as it relates to the utilization of mathematical models for English. A number of mathematical language models are presented and explained, and evidence of their usefulness is given where available. In nonmathematical research, studies concerned with measurement of letter…

The transfer of information through space and time in communication systems is often accompanied by significant delays which give rise to meaningful storage problems. Mathematical models have been developed for the study of these kinds of problems which are applicable to the design of manual, library-type, or mechanized information storage and…

Unemployment and inflation pose a trade-off problem with one being employed at the expense of the other, seriously hampering efforts to deal effectively with poverty, crime, pollution, and other domestic problems. When unemployment is high, real income is relatively low so the nation feels that it cannot afford measures to solve these questions.…

This project was concerned with the development of mathematical models of elementary mathematics learning and performance. Probabilistic finite automata and register machines with a finite number of registers were developed as models and extensively tested with data arising from the elementary-mathematics strand curriculum developed by the…

Since 1972 the national percentage of tenured faculty has risen from 43 to 60 percent, and from 23 to 52 percent at York College of Pennsylvania. The tenure policy has been debated there and nationally, and the college has changed its policy almost annually. This study first established an analytic faculty profile to determine the parameters for a…

Several activities consistent with the error analysis method of teaching measurement are described. These activities illustrate the method which is then discussed in some detail. (SD)