DSYSTM is an interactive computer program designed to perform a linear-graph analysis of contingency table data. The program is especially suitable for the analysis of change models. (Author/JKS)

For the educational researcher needing to analyze frequency counts arising from cross classification of a sample of observations on a number of qualitative variables, a unified approach is described for the analysis of the p-way contingency table which enriches our understanding of the relationships existing among the classification variables.…

One of the most frequently encountered problems in educational research and evaluation is that of evaluating the effect of a treatment in settings over which the researcher or evaluator has little control. A strong plea is made for use of quasi-experimental designs in these situations and this research provides a method of testing the hypothesis…

To study the relationship of education to economic growth for the state of Iowa, the hypothesis that increasing the level of education for the labor force would lead to higher levels of income or economic growth was tested for the period from 1950-1967. The Cobb-Douglas production was used to evaluate the relationship. The function used labor…

The relative power of the Mann-Whitney statistic, the t-statistic, the median test, a test based on exceedances (A,B), and two special cases of (A,B) the Tukey quick test and the revised Tukey quick test, was investigated via a Monte Carlo experiment. These procedures were compared across four population probability models: uniform, beta, normal,…

This paper is the first of a series of studies that investigate a new multivariate theory of personality types or "styles". This theory suggests that any personality type or style consists of a specific combination of psychological defenses, cognitive and affective styles, belief and value systems, moral development, etc. (Author)

Special cases of the factor analysis model are developed for four selection situations. Methods are suggested whereby parameters in each case can be estimated using a maximum likelihood procedure recently developed by Joreskog. (Author)

THREE STRUCTURED Q SORTS CONTAINING LIBERAL, CONSERVATIVE, PROGRESSIVE, AND TRADITIONALIST STATEMENTS ENABLED THE INVESTIGATOR TO TEST THE HYPOTHESIS THAT INDIVIDUALS WHO ARE LIBERAL IN THEIR SOCIAL ATTITUDES WILL TEND TO BE PROGRESSIVE IN THEIR EDUCATIONAL ATTITUDES, WHEREAS INDIVIDUALS WHO ARE CONSERVATIVE IN THEIR SOCIAL ATTITUDES WILL TEND TO…

Errors of misclassification and their effects on categorical data analysis are discussed. The chi-square test for equality of two proportions is examined in the context of errorful categorical data. The effects of such errors are illustrated. A correction procedure is developed and discussed. (Author/MH)

Tests whether children's learnings in one of the social sciences, geography, are as hypothesized, hierarchically dependent; that is, whether learning of each in a series of central, analytic processes in one of the social sciences facilitates, through positive transfer, the learning of each succeeding higher-order capability in the field.…

To gather data on the effects of different modes of instruction on physician achievement in plotting mean P, O, RS, and T receptiors in electrocardiography, researchers chose a random sample of physicians who had taken a correspondence course on electrocardiography during the previous 5 years from the University of Southern California School of…

A copy of the computer program, which determines the transformation matrix used to rotate the configuration, the dilation factor, and the translation vector, is available from the first author. (CB)

The intention of this research is to contribute additional data, hopefully bearing on the solution to some of the problems and indirectly, the cause(s) of Sudden Infant Death Syndrome, and to present ideas for consideration for future SIDS research. (Author/RK)