This paper presents two extensions of the full-rank multivariate linear model that are particularly useful in multivariate analysis of covariance (MANCOVA) and repeated measurements designs. After a review of the basic full-rank model, an extension is described which allows restrictions of a more general nature. This model is useful in the…

A relationship between experimental and statistical controls is considered in an effort to show how this relationship affects the power of an experiment. Statistical rather than experimental controls are often used to reduce the effect of subjects at the extremes of individual difference. This results in attrition of actual experimental subjects.…

This paper focuses on theoretical and methodological problems in social psychological research on the culturally different. Major problems in using experimental approaches are discussed: (1) the reactive nature of the experiment; (2) selection bias; (3) experimenter bias; and (4) value and ethical problems. The field experiment and combined field…

The paper explains the design of a national survey which was intended to identify factors associated with variations in the properties and contents of individualized education programs (IEPs); provide descriptive information about the target population; the nature and setting in which special education services are provided to this population;…

One response to the large and rapidly growing number of legal cases with which nonlawyer researchers must deal is computerized legal data retrieval technology. LEXIS, an example of such technology, improves upon traditional research tools in two ways: it increases the speed with which researchers may discover relevant documents and, through its…

The problems inherent in analyzing data in which subjects are "nested" within hierarchical units (such as classrooms or schools), and thus are not independent of one another, are addressed through the use of Joreskog's LISREL model for analyzing covariance matrices. A solution to the problem is proposed and illustrated using data from…

ALTHOUGH IT IS ASSUMED THAT PLAY THERAPY IS BENEFICIAL TO CHILDREN, LITTLE RELEVANT RESEARCH DATA IS AVAILABLE CONCERNING THE NATURE AND EXTENT OF ITS EFFECTIVENESS. THE EXISTING PAUCITY OF RESEARCH INFORMATION CONCERNED WITH PLAYROOM BEHAVIOR IS ATTRIBUTABLE TO (1) THE INADEQUATE CONCEPTUALIZATION OF RELEVANT THEORY AND OF THE SITUATIONAL…

This five-year study gathered data on 174 prospective teachers through personality tests, self-evaluation forms, and sound films of student teaching behavior, and examined the effects of three kinds of psychological feedback on teacher preparation, personality, and behavior. Subjects were divided into four groups--one for control and three for…

THE PURPOSE OF THIS STUDY WAS TO DETERMINE IF A HAWTHORNE EFFECT WERE PRESENT IN A 3-YEAR LONGITUDINAL STUDY WHICH COMPARED TWO METHODS OF TEACHING READING IN FIRST GRADE. THE INITIAL SUBJECTS WERE TWO TEACHERS AND FIVE FIRST-GRADE CLASSES OF RANDOMLY ASSIGNED STUDENTS WHO COMPOSED ONE EXPERIMENTAL, ONE CONTROL, AND THREE SUBCONTROL GROUPS.…

The report covers preparatory work for a further two-year study of student affiliation and drop-out at a four-year urban commuter college, Portland State College. The principal task was the development and testing of a series of scales measuring various aspects of student affiliation. After preliminary testing, scale test items were administered…

An examination of typical situations concerning the status of a variable is followed by a discussion of the measurement and empirical problems involved in measuring current status. Arguments for more consideration of variability, particularly individual variation, are presented. Among the problems discussed are (1) describing large samples through…

This paper describes the Union College Character Research Project designed to study the development of self-regard in children, ages 2-5. Evaluation instruments and curricular materials were developed for parents to use at home with their children. Seven scales to measure the development of self-regard were constructed: (1) Socially Acceptable…

At a 1973 workshop held in Denver, Colorado, 21 participants familiar with the uses of Scientific and Technical Information (STI) services gathered to identify the system's major research needs. Initially, 50 research projects were suggested in the areas of design, management, operations, marketing, and global considerations. Using a priority…

Starting from the premise that administrators, program personnel, and social scientists are equally responsible for the conduct of evaluation, this paper addresses the legitimate role of evaluation research via discussion of: (1) the environment in which evaluation takes place; (2) types of evaluation designs; and (3) selection of an evaluation…

New ways of using factor analysis in research designs are suggested in this paper that would allow research to move in new directions that are being suggested for educational technology. A brief simplified overview of factor-analytic techniques is given, followed by a description of some recent developments in factor-analytic techniques which make…