Failure to identify and account for the effect of moderator variables is an important reason for the low explanatory power of much educational research. Pre-existing subgroups such as sex, ethnicity, and curriculum offer an easily identifiable and theoretically meaningful source of moderator variables. Tests for intercept and slope differences in…

This study examined the relationships between spatial ability, mathematics achievement, and sex for students in grades 2-7. Four spatial tests (embedded figures, serial integration, coordination of viewpoints, and rotation and development of surfaces) were used to measure spatial ability; sex and mathematics achievement, as measured by the Iowa…

In the current controversy over accountability in education, educators concerned with the affective aspects of education seem to be in danger of losing the battle of "behavioral objectives" on two fronts: (1) demonstrating that the affective behavior of the teacher does make a difference in educational outcomes, and (2) demonstrating how affective…

In the context of the rapid technological advance characteristic of post-industrial societies, organizational theorists have paid a great deal of attention to the problem of organizational change. One of the central issues in various analyses of the problem of change in general has been the observation that all organizations do not respond to…

Findings in industrialized countries, such as those of Jencks and Coleman, indicate that socioeconomic status has a strong influence on academic achievement and that school effects are of lesser importance. This study of socioeconomic influences and school influences on the performance of 23,615 Ugandan children taking the Primary Leaving…

Relationships between student characteristics (academic as well as personal) and student changes were investigated. Student changes were measured by growth scores with the following four criterion measures: Test on Understanding Science; Watson-Glaser Critical Thinking Appraisal; A Scale to Measure Attitude Towards Any School Subject; and Student…

Analysis of data on this algebra course, gathered by the Comprehensive Achievement Monitoring (CAM) system, indicated that equivalent scores were yielded by either random or chronological arrangement of the test items on the monitor forms. Chronological arrangement may be permissible, therefore, for normal data processing; random arrangement…

An investigation was undertaken of the intercorrelations among residuals obtained by applying regression techniques under two conditions: (1) mean sixth-grade Metropolitan Achievement Test reading scores predicted by mean second-grade Stanford Achievement Test reading scores, and (2) mean sixth-grade reading scores predicted by mean second-grade…

This study was designed to accomplish two interrelated objectives: first, to investigate the existing relationship between selected factors previously identified as being significant in attempting to predict military service losses during first-term service and second, to make available to qualified users a comprehensive data base for further…

The two purposes of this study were: (1) to identify those factors that significantly affect the use of the science process skill of prediction, and (2) to construct and test a probabilistic equation, based on a competence-performance model of cognitive development that accounts for a child's performance on tasks involving the skill of prediction.…

In this speech, the author discusses a study made that attempted to determine if there are differences in characteristics among school districts that implement full-scale models of year-round schools, districts that implement restricted models of year-round schools, and districts that do not implement any year-round model. Concurrently, he…

Measures of background characteristics, school performance, and test achievement were analyzed for four race-by-sex samples of third graders who were known to have later become high school dropouts. In each sample, age in the third grade, course marks, and standardized achievement scores were found to be significantly related to the grade in which…

The study attempted to demonstrate significant relationships between systematically derived occupational descriptors and selected measures of worker characteristics in the affective domain. The predictor variables were derived from the Occupation Analysis Inventory (OAI) and consisted of work-dimension scores describing occupations in terms of…

As with any new theory, it is necessary to validate the basic construct of vocational maturity. Once this is done, instruments to measure vocational maturity, or decision making, can be evaluated. With this as an objective, this paper discusses some of the problems associated with measuring vocational maturity, such as identifying variables,…

The relative power of three possible experimental designs under the condition that data is to be analyzed by nonparametric techniques; the comparison of the power of each nonparametric technique to its parametric analogue; and the comparison of relative powers using nonparametric and parametric techniques are discussed. The three nonparametric…