In applied and experimental research, it has been demonstrated that the extreme groups procedure is more powerful than the standard correlational approach for some values of the correlation and extreme group size. Methods are provided for using the covariance information that is usually discarded in the classical extreme groups approach.…

To examine the ability of the correction factor epsilon to counteract statistical bias in univariate analysis, an analysis of variance (adjusted by epsilon) and a multivariate analysis of variance were performed on the same data. The results indicated that univariate analysis is a fully protected design when used with epsilon. (JMB)

A distinction is drawn between public policy issues which are specific to time and place, and the kind of moral dilemma used by Kohlberg which is more general and universal. It is hypothesized that the same type of reasoning will be revealed by both. (Editor)

By keeping records of their own behavior, clients can provide useful data for research by practitioners as well as participate in an effective form of treatment. The author proposes guidelines for assuring the accuracy of clients' reports. (Author)

The main energy of this investigation focused on the viability of different forms of assessing the quality of compositions written by ten- to eleven-year-old children. (Author/RK)

Calls attention to several errors in a recent application of canonical correlation analysis. The reanalysis contradicts Cropley's conclusion that "creativity tests can be said to possess reasonable and encouraging long-range predictive validity." (Author/SDH)

This study not only reflects on previous research in the area of counseling effectiveness, but introduces a unique approach to research in this area. (Editor)

Many problems confront researchers who are developing appropriate methods to determine the effects of sexual abuse. Particularly serious problems arise when the victims are children who were abused while attending a day care center. Several methods for studying child sexual abuse have been recommended. This paper discusses problems researchers…

A kindergarten teacher reviews research findings on aspects of children's diet that may influence behavior and the ability to learn. Introductory discussion presents vignettes relating kindergarten children's behavioral responses to dietary intake. A brief background section offering dietary tips is followed by relatively extended discussions of…

This paper presents a model which illustrates the cyclical and interactive nature of the basic elements of the research design process. Rather than presenting each research design component in isolation, the model emphasizes their interrelationships. A brief discussion is presented on each of the following components of the model: (1) the "words"…

This report presents the key findings and recommendations of the Advisory Panel for the Head Start Evaluation Design Project. The principal audiences for the report are: (1) leadership and staff of the Administration for Children, Youth, and Families (ACYF) who have administrative responsibility for Head Start; and (2) local Head Start programs.…

Researchers increasingly recognize that significance tests are limited in their ability to inform scientific practice. Common errors in interpreting significance tests and three strategies for augmenting the interpretation of significance test results are illustrated. The first strategy for augmenting the interpretation of significance tests…

Although there have been frequent calls for over-time research in mass communication, there are still many reasons that researchers use simpler designs. Each approach: two-time point, panel/repeated measures, and time-series experimental designs, offers its own advantages and disadvantages. By examining the benefits and disadvantages of each…

Tested were two elaborations of research design which were implemented to explain inconsistent findings concerning levels of father involvement in child rearing when the mother is employed. The first elaboration was to study separate dimensions of fathering participation, rather than treating it as a unitary factor. The second elaboration was to…

Kaplan (1964) describes the now classic distinction between "logic-in-use," the more or less logical cognitive style and procedures used by the educational scientist, and "reconstructed logic," the scientist's after-the-fact, explicit formulation and idealization of the logic and procedures. However, most technical documents…