The stability of the structure underlying a fourteen item rating scale (the In-Training Evaluation Report) when completed on two different groups of medical candidates was investigated at the Royal College of Physicians and Surgeons of Canada. In addition the relationship between the rating scale score and scores on other measures such as multiple…

A general statistical model for the multivariate analysis of mean and covariance structures is described. Matrix calculus is used to develop the statistical aspects of one new special case in detail. This special case separates the confounding of principal components and factor analysis. (DEP)

A procedure for estimating the reliability of a factorially complex composite is considered. An application of its use with Scholastic Aptitude Test data is provided. (Author/JKS)

The Cartesian theory of dimensionality (defined in terms of geometric distances between points in the test space) and Leibnitzian theory (defined in terms of order-generative connected, transitive, and asymmetric relations) are contrasted in terms of the difference between a factor analysis and an order analysis of the same data. (Author/CTM)

Two sets of five items each from the Law School Admission Test were analyzed by two methods of factor analysis, and by the Krus-Bart ordering theoretic method of multidimensional scaling. The results indicated a conceptual gap between latent trait theoretic procedures and order theoretic procedures. (Author/CTM)

This article discusses two basic issues in the interpretation of factorial investigations (descriptive vs causal inferences and group vs individual characteristics); updates previously published reviews of factor-analytic studies in rehabilitation under five categories (counselor, client, instruments, attitudes, and environments); and outlines…

Using 144 high school physics classes as units of analysis, class means on a battery of 57 variables were factored in three different factor sets. Each set included three main factors which could be identified roughly as achievement, affect, and group structure. Results gave further credibility to Bales' work. (Author/KR)

Satisfaction of expectations (quality of care) is more important in determining willingness to return than are race, sex of provider, or care setting. (Author)

Examines the Personal Health Survey methodology and suggests that in studying the factorial composition of physical and mental health complaints in limited populations, the data provides normative information "only" for the samples tested on one occasion. States further that it would require large-scale normative studies to make any…

Assessed the psychometric structure of a neuropsychological test battery in order to assist in understanding the predictive and descriptive components in the diagnosis of organic brain disturbance. The methods chosen were both linear and nonlinear, factor analysis and hierarchical cluster analysis. (Author)

Earlier comparisons of packaged programs for factor analysis are updated because of recent revision in some programs. The top status of SPSS is no longer so apparent as formerly. BMD and SAS now have expanded options. SAS has flexibility and convenience. (Author)

Solutions for the indeterminate common factor of a group of variables satisfying the single common factor model are not unique. This paper examines a number of thereoms concerning that problem and draws conclusions from them for factor analysis in general. (Author/JKS)

An analysis of ratings of primary symptoms (hyperactivity and inattention) and secondary symptoms (self-esteem deficits and delinquent behavior) that are thought to arise from the hyperkinetic child's flawed interaction from his environment. Such an analysis could produce separate groups of clusters of symptoms descriptive of the hyperkinetic/MBD…

Using the results of a survey of members of the National Association for Research in Science Teaching (NARST) (See related article SE 521 919), factor analysis was used to identify six major areas of research priorities. (CP)

Opinions from a survey of 9,000 teachers on teacher health are summarized. The role of the school principal in promoting teacher health is considered crucial. (MJB)