This study was undertaken to determine the degree of factorial invariance that exists in a battery of predictor variables commonly used in the selection of applicants for dental school. The following variables were used in the analyses performed: 13 subscores from the Dental Aptitude Test Battery, Overall QPA, Required Courses QPA, years of…

The Instructional Process Analysis Project (IPA) is a study jointly undertaken by the Nordic countries in 1967. The present study discusses a methodological problem area of very narrow scope within the IPA project. The general aim of the study is to examine the factor-analytical method of sequence analysis and to produce variables that measure the…

Factor analysis of teacher rating scales has often identified components which focus on the instructor's respective roles as actor and interactor. A total of 208 Purdue University instructors were rated by their students on the Course-Instructor Evaluation form in an attempt to: (1) determine the relationships between specific and global items,…

An instrument was developed and tested which would measure intermediate interaction behavior in small-group communication. The study was designed to uncover the several dimensions of such behavior and produce a reliable, valid measure for each dimension that would yield data amenable to parametric statistical analysis. Analysis of two experiments…

The results of an investigation into some special cases of the general "orthomax" formulation are presented. In particular, the effects of manipulating a parameter in this formulation on various aspects of factor solutions are identified through the use of four sets of data, varying considerably in size, and reliability and factorial complexity of…

This study was undertaken to broaden the scope of the components of the "New Left" Scale, first developed by Christie et al. at Columbia College (1969), by including students from a U.S. university not known for its activism and responses given by a sample of Japanese college students. In short, U. S. and Japanese students both agreed…

Procrustes rotation involves fitting a factor pattern matrix to a specified target matrix in factor analysis. These rotations are useful for the investigator who wishes to see how well his data can be made to fit a hypothesized factor pattern matrix. The mathematical problems involved in these transformations are outlined and computer algorithms…

Problems associated with rural economic development--involving maldistributions of population, income, and employment--suggest the need for statistical indicators of rural area growth and development. Development problems are not usually aligned geographically with the boundaries of a city, county, or state, but multicounty units of observation…

A study designed to investigate the validity of using scale scores in lieu of factor scores for factors derived from a factor analysis technique is presented. The Work Values Inventory (WVI) was selected for use because of its purported factor structure. The population consisted of ninth-grade students from a suburban area of a large metropolitan…

This study was designed to assess the conceptual structure of the Task of Public Education Opinionnaire (TPE). Since the development of the instrument, several psychometric techniques have been formulated. Two of those methods, image component and alpha factor analysis, were applied to the items of the TPE after the correlation matrices were…

This study measured the effectiveness of teacher education programs in modifying cross-cultural attitudes through Osgood's Semantic Differential (SD) techniques, coupled with factor and pattern similarity analyses. The five concepts rated were desegregation, discipline, instructional technique, professionalism, and students. Subjects were 51 black…

This paper concerns situations in which a p x p covariance matrix is a function of an unknown q x 1 parameter vector y-sub-o. Notation is defined in the second section, and some algebraic results used in subsequent sections are given. Section 3 deals with asymptotic properties of generalized least squares (G.L.S.) estimators of y-sub-o. Section 4…

A battery of instruments intended to predict on-the-job performance of patrolmen was administered to civil service police applicants, and the resulting data were factor analyzed. The factor structures which emerge closely resemble the intended structures and appear promising for planned predictive studies of criterion performance on the job. The…

The present study explored the effects of complex relational sentences upon the acquisition and recall of surrounding material in immediate and long-term memory. The study also investigated the effects of an immediate prompted recall test upon long-term retention, and the recallability of different types of content. Reading time (subject-paced; 16…

Seventy-two scales collected from a previous study were administered to a group of 557 sixth grade, Philadelphia public school children who were mainly from the lower socioeconomic class. A matrix sampling approach was used in collecting the data. The mean value for each scale was established and these values were correlated. The resulting 72 x 72…