Thirty subjects were presented with a visual form discrimination task requiring them to match Roman letters when a variety of transformations were held constant. They were given massed practice across four blocks of eight stimuli. Results of a repeated measures analysis of variance showed support for the distinctive features hypothesis. (JC)

Procedures are described for teaching statistical inference and decision-making without lengthy pre-requisite work in descriptive statistics and probability theory. (JLH)

Testing hypotheses in which the level of urbanization of countries and economic subregions of the South were related to their plantation and/or their political economic character, it was found that neither the political economic nor the plantation theory offered a sound explanation of the rurality of the South. (Author/JC)

Testing the hypothesis that at least two types of rural familism exist within different geographic regions of the United States, this study indicates that extended kin-oriented familism predominates in the rural Southeast and primary kin-oriented familism predominates in the rural Far West. (JC)

The objective assessment of thought disorder in schizophrenia is problematic in clinical psychology. Recently, an individually administered instrument (WIST) was introduced as a brief, objective, and quantitative measure of schizophrenic thought processes. Possible shortcomings of the WIST are noted; experimental findings that concern extension to…

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)

This research investigates the perceptions of public school teachers pertaining to the role of the school psychologist. The results agree with findings of earlier studies in that the school psychologists appear to be defining their role more narrowly than how it is being perceived by other school personnel. (Author/RK)

The correspondence of left-right confusion in children to the bilateral symmetry in the nervous system was tested by presenting left-right and up-down discrimination-learning tasks to 80 preschoolers who viewed these stimuli from either an upright or 90-degree-rotated body position. The data contradict anatomical model predictions. (Author/BN)

This paper develops a general method for comparing treatment magnitudes for research employing multiple treatment fixed effects analysis of variance designs, which may be used for main effects with any number of levels without regard to directionality. (Author/BS)

Using computer simulation, parametric analysis of covariance (ANCOVA) was compared to ANCOVA with data transformed using ranks, in terms of proportion of Type I errors and statistical power. Results indicated that parametric ANCOVA was robust to violations of either normality or homoscedasticity, but practiced significant power differences favored…

The method of unweighted means in the multivariate analysis of variance with unequal sample sizes was investigated. By approximating the distribution of the hypothesis sums-of-squares-and-cross-products with a Wishart distribution, multivariate test statistics were derived. Monte Carlo methods and a numerical example illustrate the technique.…

The ultimate goal of the institutional researcher is not always to test a research hypothesis, but more often simply to find an appropriate model to gain an understanding of the underlying characteristics and interrelationships of the data. Exploratory data analysis provides a means of accomplishing this. (Author)

A review of model-selection criteria is presented, suggesting their similarities. Some problems treated by hypothesis tests may be more expeditiously treated by the application of model-selection criteria. Multivariate analysis, cluster analysis, and factor analysis are considered. (Author/GDC)

An approximate relationship is devised between the unidimensional model used in data analysis and a multidimensional model hypothesized to be generating the item responses. Scale shrinkage is successfully predicted for several sets of simulated data. (Author/LMO)

The relation between the power of a significance test in a block design with correlated measurements and the reliability of the measuring instrument is analyzed in terms of the components of variance entering the reliability coefficient and the noncentrality parameter. (Author/LMO)