Guttman's "rank-reduction" theorem is employed to demonstrate how most of the algebra and computational work for standard correlational and analysis of variance methods can be examined within a single matrix system. Analyses of both correlational and experimental data are illustrated with an easy-to-use computer program. This application…

There were three objectives of a revision and validation of the Iowa Algebra Aptitude Test (IAAT): (1) to reduce the importance of speed; (2) to improve the quality of the existing items; and (3) to replace a subtest with one of potentially greater predictive validity. The last of these goals involved the development of a new subtest composed of a…

The author attempts to determine the value of psychometric measures of impulsiveness and anxiety for predicting potential disciplinary problems among high school males. A secondary purpose is to relate these personality factors to academic achievement. Approximately 320 sophomores were administered a psychometric battery which included: (1) an…

Discriminant function analyses were used to predict participation and achievement in the USAFI GED program. It was found that members of critical groups (non-participants and non-achievers) could be identified on the basis of demographic characteristics with a high degree of confidence. (Author)

The subjective magnitude estimation (SME) procedure was used to obtain estimates of relative word frequency from two adult groups (15 lexicographers, 13 other adults) for 60 words ranging widely in objective frequency. Lexicographers rendered more reliable estimates, and their averaged data correlated more highly with objective log frequency than…

The construction cost estimate, often expressed as an absolute cost, leads to misunderstanding between client, designers, and builders. If estimates are to be used as adequate cost indicators, their probabilistic nature must be recognized and they must be expressed not as absolute numbers but in terms of a number with some indication of the…

Reported was an 8 year longitudinal study of social and antisocial behavioral correlates in 1550 third, sixth, and ninth grade children identified as either aggressive-disruptive or prosocial by their teachers. A more intensive study was made of 192 aggressive-disruptive and 192 prosocial children. Data included interviews, individual tests (such…

During basic combat training, 2,072 enlisted men were classified as being either AWOL or Non-AWOL. Three hundred of these men were similarly classified after 90 days in their initial unit assignment. AWOL and Non-AWOL soldiers were then compared to determine whether certain factors could be used to predict which soldiers would go AWOL or to…

Three hundred randomly selected subjects were interviewed concerning their personal characteristics and the geographic area of residence. These factors, including occupation, age, education level, and measures of mobility, were analyzed using stepwise multiple regression to isolate predictors of personal mobility. Multiple correlation coefficients…

Aptitude for academic achievement is the major intended selection criteria for college enrollment in Illinois. The differentiated system of higher education attempts to match student ability, needs and aspirations to broadly defined institutional missions, and there is a broad spectrum of diversity within that system. Aspirations for achievement,…

A potential program for dealing with the identification of kindergarteners with potential learning disabilities is discussed. The subject is dealt with on the level of prediction. It is pointed out that as children learn in different ways, different methods of educating them must be devised. Early identification of disabilities lessens the chances…

Grades and persistence have long dominated research concerning college success, but there are many important types of college success that should be considered in evaluating the effects of a college program. A thorough review of thousands of research articles published during the decades of the 50's and 60's revealed over 20 broad developmental…

Primary validation of the Nor Cal questionnaire was accomplished in Phase 2 of the Nor Cal Attrition Study. The results of the primary validation were reported in the document entitled, "Phase 2 Final Report," (ED 039 879). The primary validation showed that the consortium-wide empirical validity varied from .65 to .67 depending upon whether or…

THE PURPOSE OF THIS STUDY WAS TO IMPROVE THE PREDICTION OF A STUDENT'S PERFORMANCE IN A SPECIFIC HIGH SCHOOL. THREE HYPOTHESES WERE STRUCTURED (1) THE GREATER THE CONGRUENCE BETWEEN A STUDENT VOCATIONAL PREFERENCE INVENTORY (VPI) PROFILE AND THE OVERALL GRADE LEVEL PROFILE, THE BETTER IS THE STUDENT'S ACADEMIC ACHIEVEMENT AND BEHAVIOR AS MEASURED…

The purposes of this study were to determine what characterizes a useful cost estimating model at the community college level, to implement at a community college the Resource Requirements Prediction Model 1.6 (RRPM) developed by the National Center for Higher Education Management Systems, to identify problems associated with implementation and…