Most decision problems are those in which a choice among multiple-objective alternatives must be made. The central difficulty of such decision problems lies in finding single decision criteria that combine the decisionmaker's objectives and interests in an acceptable way. In this paper, a general procedure for the construction of such single…

The purpose of this study was to investigate the effects of hypothesis testing instructions compared to brief instructions on the speed of shift problem solution of grade school age subjects, in order to provide information on the development of hypothesis testing behavior in children and the sampling characteristics of hypothesis testing in these…

Although it has been claimed that the Rasch model leads to a higher degree of objectivity in measurement than has been previously possible, this model has had little impact on test development. Population-invariant item and ability calibrations along with the statistical equivalency of any two item subsets are supposedly possible if the item pool…

This proceedings volume of a seminar on planning library services is the third in a series of papers, published at irregular intervals, to report on research work by members of the University of Lancaster library staff. From January 1967 until June 1969 the Office of Scientific and Technical Information (OSTI) organized regular meetings under the…

Several procedures proposed in the literature for the analysis of growth curves are reviewed. Particular attention is given to the current issues in this area to guide practitioners in the selection of the most appropriate methodology. (Author)

The origins and range of applications of the academic matrix, or ICLM (Induced Course Load Matrix), are described by its originator. Its identification of interrelations among student majors and their course preferences makes it useful for academic planning and curriculum reviews, particularly in simulation models for exploring costs, personnel,…

Using the concepts of conditional probability, conditional expectation, and conditional independence, the main results of the classical test theory model can be derived in a very few steps with minimal assumptions. The present effort explores the possibility that present classical test theories can be further condensed. (Author/RC)

The nature of insight is discussed as it relates to mathematical models. Intuition and the intuitively obvious are argued to have no necessary connection with models. (MP)

The authors respond to Miley's critique (TM 503 900) of their article on predicting parolee recidivism (TM 502 998). They are pleased that he discovered some computational errors, that he used their method to analyze other data, and that he developed hypotheses concerning the behavior of the parameters. (Author/GDC)

A model is provided for staffing telephone reference operations which allow for the balancing of staffing requirements and reference delivery standards. Telephone service is assumed, but it should be equally applicable to any reference queuing situation. (Author)

Joreskog's procedure for the analysis of simplex models was used to test Humphreys' assertion that eight semesters of undergraduate grade point averages have a simplex form. The assertion was confirmed, and precise estimates of unattenuated correlations and reliabilities were also obtained. (Author/JKS)

Discussed are aspects of the use of mathematical models in the teaching of oscillation theory. (MDR)

The causal modelling technique is extended to nonrecursive causal models that involve feedback and/or reciprocal causation. Three least squares techniques for estimating parameters are described, and data from an empirical study illustrate the causal modelling technique. (Author/GDC)

The problem of comparing two sociometric matrices, as originally discussed by Katz and Powell in the early 1950's, is reconsidered and generalized using a different inference model. In particular, the proposed indices of conformity are justified by a regression argument similar to the one used by Somers. ( Author/JKS)

This paper explains the theoretical links between the demand for library service and key economic variables, and describes how demand was estimated in one specific experimental context: the demand for library service by institutional users of the Cleveland Health Sciences Library. (Author)