A data book designed for use by high school seniors to investigate the problems and processes of nation-building in Africa south of the Sahara today has been prepared. The book consists of two parts. Part I contains descriptions of the geographic, social, economic, political, and historical features of 24 sub-Saharan African nation-states. Part II…

To meet the educational goals of his school, a principal would benefit from a knowledge of the informal interpersonal relationships present in his school. Through sociograms and the Organizational Climate Description Questionnaire (OCDQ), five hypotheses of informal organization relationships were tested. Four hypotheses were supported by…

Of the three interpersonal needs measured by Schutz's FIRO-B Scale (expressed and wanted inclusion, control, and affection), it is hypothesized that (1) control will be the most salient need perceived in subordinates by immediate supervisors, and (2) the immediate superior of a given subordinate will be more likely to evidence a control…

The purpose of the present study was to investigate empirically the effects of violations of the assumption of homogeneity of within-group regression slopes on levels of significance in the F test of fixed-effects ANCOVA (analysis of covariance). The study used a Monte Carlo computer simulation procedure to generate data under the following…

When analysis of variance is used, statistically significant differences may or may not be of practical significance to educators. A large part of the problem is due to the fact that a "zero difference" null hypothesis can always be rejected statistically if the sample size is large enough. If, however, a method based on the noncentral F…

Based on a Monte Carlo simulation, this study is designed to investigate the power of the Kruskal-Wallis's H-test compared to the power of the F-test for three equal moderate sample sizes drawn at random from distributions of common or different shapes but for which the population distributions have equal variances. The distributions are the…

The purpose of this study was to assess any changes in cognitions and attitudes in relation to Organizational Development (OD) goals and procedures that may have occurred among the 65 participants who attended an initial training event. The goals of this event were to establish widespread understanding and favorable attitudes about organization…

This paper suggests ways of structuring the content of feedback experimentally to test hypotheses of interest. Use of the feedback process in this manner suggests a variety of research and intervention tactics, many of them unexplored and some of them implying ethically questionable conduct. Consideration of this question also helps illuminate the…

This paper presents an index of goodness-of-fit for comparing m models over n trials. The index allows for differentiated weighting of the trials as to their importance in the comparison of the models. Several possible weighting schemes are suggested and the conditions on the weights which assure asymptotic normality of the index distribution are…

The relationship of speech training to the written English of selected Negro students using substandard English in an elementary school was investigated. The limitations to the study are: (1) The elementary school is a small rural school with an enrollment of about 500 white and 80 Negro students; (2) The school has only one part-time speech…

An investigation was designed to ascertain the change in the spontaneous oral vocabulary of 25 boys and 25 girls in four successive biennial interviews as the children progressed from kindergarten through grades two, four, and six. The investigation assumed the probable interrelation of children's reading and oral language. Six hypotheses were…

The central purpose of this study was to determine to what extent views of participation in adult education would be changed if viewed through the eyes of the learner rather than through the eyes of the educator. The study report is comprised of five chapters. Chapter I contains discussions of pertinent literature, problem identification, purposes…

Piaget explains the stage IV error as a failure to assimilate the new place of hiding rather than a forgetting of it. His hypothesis predicts that the likelihood of error should not vary with the length of the delay interval. Nine-month-old infants delayed 0, 1, 3, or 7 seconds before having the opportunity to search. Infants in all conditions,…

The jackknife is a general inferential technique intended to ameliorate the problems associated with inadequate sampling theory. The research reported herein is directed at investigating the utility of the jackknife for establishing confidence intervals on and testing hypotheses about the disattenuated correlation coefficient for small samples. A…

This paper discusses the use of contrast coefficients in multiple linear regression models, and shows how they can provide for a logical method of analysis in both the analysis of variance and the analysis of covariance. (CK)