The purpose of this study was to identify the factorial composition of 55 characteristics of the subjects. These characteristics were assessed by a self-report inventory containing 55 items pertaining to drug use and alleged related areas of drug use. (Author)

Author presents an illustration of a general method of factor matrix analysis, a versatile tool for the comparative study of systems of educational thought, analogous to the comparative methods, using categorical constructs, that are now widely recognized as fundamental in the behavioral sciences. (Author/CB)

This article discusses fundamental principles of design and interpretation of factorial studies in an effort to minimize blatant misuses of the factor analysis technique. The article concludes with several recommendations for improving the design of factor analytic studies in rehabilitation. (Author)

The present study was designed to investigate the hypothesis that in two-sibling families the presence of an older sister is related to the younger brother's subsequent sexual behavior, sexual interests, attitudes, and problems as measured by a self-report sex questionnaire. (Authors)

This study demonstrated that it is possible to determine the relationship between factors in a factor analysis and variables external to the analysis itself. The primary result was to show that the general factor in WAIS intelligence is impaired by brain damage. (Author)

The present results confirm the contention that the scales of a new personality inventory, the Differential Personality, exhibit to a satisfactory degree that most desirable of scale properties: factorial simplicity or homogeneity. (Author)

A procedure is outlined showing how the axiom of local independence for latent structure models can be weakened. (CK)

Relations between maximum likelihood factor analysis and factor indeterminacy are discussed. (CK)

It is shown that McDonald's generalization of Classical Principal Components Analysis to groups of variables maximally channels the totalvariance of the original variables through the groups of variables acting as groups. An equation is obtained for determining the vectors of correlations of the L2 components with the original variables.…

The utility of test factor analysis for drug research was investigated in a study of the effects of a minor tranquilizer on retarded subjects. (Author)

Factors were rotated to simple structure by the Kaiser Varimax procedure. Seven factors resulted, accounting for 83.5 percent of the total variance. The factors were defined by SVIB variables which had high loadings and high intercorrelations. Previous groupings into occupational families were challenged. A recommended regrouping of SVIB variables…