A meta-analysis was conducted on 44 educational studies that used either a (labelled) Hawthorne control group, a manipulation of Hawthorne effects, or a group designed to control for the Hawthorne effect. The sample included published journal articles, ERIC documents or unpublished papers, and dissertations. The studies were coded on 20 variables,…

Least squares fitting process as a method of data reduction is presented. The general strategy is to consider fitting (linear) models as partitioning data into a fit and residuals. The fit can be parsimoniously represented by a summary of the data. A fit is considered adequate if the residuals are small enough so that manipulating their signs and…

There has recently been a tremendous increase in the quantity of research published in gerontology. While the increase in the quantity of research has been regarded positively by gerontologists, there has been little discussion or evaluation of the quality of the research. Two articles that appeared in 1975 were both very critical of…

A brief overview of the basic concepts and philosophies for sampling water and waste water systems is presented in this module. The module is not intended to specify sampling procedures, frequencies, or locations for specific treatment facilities but rather to outline those general procedures which should be followed when sampling under most…

In October of 1983, Austin Independent School District secondary students (n=1275) completed a Youth Needs Survey (YNS) representing a 16 percent return of the original sample. Because the countywide Social Policy Advisory Committee was using the YNS results for planning, it was decided to use a high school student questionnaire (Questions for…

The paper describes instruments for determining preferences of consumers for selected product characteristics associated with furniture choices--specifically style, color, color scheme, texture, and materials--and the procedures for administration of those instruments. Results are based on a random sampling of public housing residents. (Author/MW)

In this paper we hope to show that the continuing question of whether or not attitudes have an effect on behavior can be answered. (Editor)

An investigation was carried out to ascertain how 700 children aged seven to 15 (half boys and half girls), acquired the ability to define certain moral concepts, how they decided on whether an action was right or wrong, and what influenced the acquisitional process. (Author)

The investigation described here was carried out in the hope that some kind of classification of children's early written English could be found which would help them to learn sentence skills more effeciently. (Author/RK)

This bulletin for the researcher, the doctoral or master's candidate, or teacher interested in and/or conducting research is intended to (1) alert novice investigators to the major requirements and pitfalls of survey and experimental research, (2) point out the weaknesses of past business education studies, and (3) provide consumers of research…

This publication discusses the development and use of an Educational Needs Projection (ENP) model designed to estimate the number of students "who have difficulty with instruction in English" in the Houston Independent School District. Unlike a state-mandated program that requires teachers and counselors to identify Limited…

This study was designed to determine factors that affect the employment status of the wife-mother and prove that these factors would be similar in both "typical" and "disadvantaged" samples. Three "universal variables" were: the husband's attitudes, youngest child's educational status, and frequency of family sharing the housework…

A set procedure developed in this study is useful in determining sample size, based on specification of linear contrasts involving certain formula treatments. (Author/DEP)

Research performed pursuant to a grant from the Charles F. Kettering Foundation.