A principal components analysis was applied to a 135-item pool of the Holland Vocational Preference Inventory, Sixth Revision. The a priori clinical scales were partially upheld with differences attributed to the characteristics of the sample and sociopolitical time context during which the test was administered. (Author)

The purpose of the present study was to use factor analysis to demonstrate relationships among aptitude, intelligence, personality, and performance in various high school subjects. (Editor)

One hundred and eighteen subjects participated in an 18-trial four-choice probability learning task to determine if probability learning data could be described by a family of learning curves and to identify ability and personality correlates of these curves. (Author)

Article considered the attitudes of teachers and the personalities of students, matters thought relevant to success and failure in academic work. (Author/RK)

Examines the content and construct validity of the Barth Scale. Latent partition analysis generated item content categories for judgmental data gathered from open education experts; factor analysis described constructs generated from response data gathered from open and traditional elementary school teachers. (RC)

Applications to the Promax Rotation are discussed, and it is shown that these procedures solve Thurstone's hitherto intractable "invariant" box problem as well as other more common problems based on real data. (Author/RC)

Using a systems concept as a model, the article explores the primary determinants of behavior and provides a conceptual, yet practical, basis for understanding and improving interpersonal effectiveness. (Author)

Study submitted in partial fulfillment of the requirements for the PhD degree at the University of Wisconsin, 1967.