A major variable by which national educational systems may be compared is their structural differentiation, defined (1) as a process, referring to the multiplication of one structural element into two or more structurally distinct elements; and (2) as a state, referring to the number of structurally distinct elements which exist in a system at a…

To test the hypothesis that track position exerts an independent, causal influence on the academic achievement of high school students, background data and complete high school records were compared for students who had begun as 10th graders in 1961 at two midwestern senior high schools. For statistical analysis, the two cohorts--753 students from…

Factors affecting measuring ability in machine shop practices at the high school level were investigated. A sample of 157 male students enrolled at four metropolitan high schools in Chicago was administered four tests devised specifically for this study (one each on measuring ability, numerical ability, mechanical knowledge, and kinesthetic…

As a link between the words in everyday use and the sophisticated language of the arts and sciences, the 1,536 words of the "Mittelstufe" or Level 2 derive in nearly equal proportion from three sources: (1) the spoken or topical language, (2) a collation of all significant word lists compiled prior to February 1965, and (3) a statistical analysis…

The purpose of this study, completed with personnel who work in local disaster services, was to obtain data to test Etzioni's model of consensus and effectiveness. The data indicate that both early socialization and communication with elites are associated with consensus formation. Consensus formation and communication have direct and significant…

This paper offers a preliminary analysis of the effects of a semi-segregated school system on the IQ's of its students. The basic data consist of IQ scores for fourth, sixth, and eighth grades and associated environmental data obtained from their school records. A statistical model is developed to analyze longitudinal data when both process error…

John B. Carroll's Model of School Learning is a paradigm which describes the degree of learning that takes place in school setting as a function of the time spent on a learning task divided by the time needed for its mastery. The components of opportunity and perseverance in Carroll's model have particular relevance to a form of school…

Instructional task variables of analytical explanation and sequence were studied in two experiments to assess the systems approach proposition of efficiency and effectiveness in concept learning. The independent variable of analytical explanation consisted of two components: a procedure for focusing the subject's attention on the critical…

The purpose of this report is to describe the results of a series of studies conducted on the relationships between census information and school achievement in the Chicago Public Schools. These studies were designed as an exploratory investigation to determine the extent to which grade-level achievement averages could be predicted using data from…

The understanding of the political behavior of school boards can be advanced by conducting factor analysis of the voting records of trustees. While the application of these methods is generally appropriate, differences in subject matter highlight the problem of inferring political theory from numerical data. In this paper, several different…

A review of trends in broadcasting and an overall economic profile of the broadcasting industry for 1972, with projections for 1973, are given by a collection of tables and graphs. The first portion presents data on total advertising expenditures and trends, along with information on the gross national product and personal consumption spending.…

Primarily through the use of tables and graphs, this report presents results of a survey done in the Fall of 1972 of the activities of students who had been enrolled in grade 12 the preceeding June. The results of this survey are compared with data from earlier surveys in this program which has been conducted since 1965. The most dramatic trend…

The purpose of this study was to determine the validity of the American College Test (ACT) in predicting academic achievement of students from an area which is culturally, economically, and educationally depressed. The population, chosen from 6 community colleges serving the Appalachian region of Kentucky, consisted of 1,127 full time (12 or more…

The aim of this study is to investigate the effects of noise on the performance of simultaneous conference interpreters, and to carry out a detailed examination of verbal and temporal aspects of their output in relation to source language input. A further aim is to compare the relative effectiveness of simultaneous and consecutive interpretation…

Ergometrics, the application of psychometric principles and procedures to the study of human work, draws from theories and principles of human behavior as well as from established procedures in psychological measurement and job analysis. The project described employs ergometrics to describe, compare, and group occupations for educational purposes.…