Statistical methods employed to test individual differences in dual-task performance and the existence of a general time-sharing ability are reviewed and critiqued. Specifically, both the types of data being collected and the types of data analysis procedures have been inadequate to the critical evaluation of a hypothetical…

This paper examines the unresolved epistemological and theoretical problems in comparative communication research. The first section examines what "comparative" means by reviewing various fields in the social sciences. The second section provides an overview of epistemic assumptions of comparative communication research and suggests that in the…

The tests for zero partial association in a multiple contingency table have gained new importance with the introduction of graphical models. It is shown how these may be performed as exact conditional tests, using as test criteria either the ordinary likelihood ratio, the standard x squared statistic, or any other appropriate statistics. A…

This paper discusses receiver apprehension, an information processing syndrome, in the context of counterattitudinal advocacy. Receiver apprehension was conceptualized as a trait anxiety associated with misinterpreting, inadequately processing, and/or being unable to adjust to incoming messages. This processing anxiety suggested cognitive rigidity…

Topics and methodologies used by researchers of teacher development activities are examined in this paper. Selected studies in educational research are analyzed and grouped into four areas. The first research design considered is the traditional empirical-analytic, or hypothesis testing paradigm, through which studies are conducted to test the…

This study was undertaken to identify the differences between asthmatic and nonasthmatic children, ages nine through twelve, on self-concept and attitudes toward physical education. It was anticipated that children having an asthmatic condition might reflect significantly different scores from their nonasthmatic peers at least partially…

A teaching aid appropriate for a beginning course on experimental design is presented. The aid is a numerical example which illustrates some of the theoretical interrelations among three competing design analysis strategies for estimating treatment effects in random assignment designs. The analysis strategies considered are analysis of variance…

INFANT SCRIBBLING ACTIVITY IS NOT SIMPLY PLAY. IT CONTRIBUTES TO THE DEVELOPMENT OF VISUAL ATTENTION AND PERCEPTION. YET, SCRIBBLING, UNLIKE WRITING IN THE COMMUNICATION SENSE, IS NOT MOTIVATED BY THE DESIRE TO INFORM, NOR TO SET DOWN THOUGHTS AND FEELINGS. THE EXPERIMENTAL HYPOTHESIS OF THIS STUDY WAS THAT THE MOTIVATIONS FOR SCRIBBLING ARE (1)…

THIS PAPER DEALS WITH SOME TESTS OF HYPOTHESIS FREQUENTLY ENCOUNTERED IN THE ANALYSIS OF MULTIVARIATE DATA. THE TYPE OF HYPOTHESIS CONSIDERED IS THAT WHICH THE STATISTICIAN CAN ANSWER IN THE NEGATIVE OR AFFIRMATIVE. THE DOOLITTLE METHOD MAKES IT POSSIBLE TO EVALUATE THE DETERMINANT OF A MATRIX OF HIGH ORDER, TO SOLVE A MATRIX EQUATION, OR TO…

TO TEST THE APPLICATION OF THE GENERAL SYSTEMS APPROACH IN CURRICULUM DEVELOPMENT, A PROBLEM WAS PROPOSED IDENTIFYING THE PHENOMENA AND CONTINGENT VARIABLES OF THE CURRICULUM SYSTEM WITHIN THE INPUT-OUTPUT FRAMEWORK. WITH TEACHERS, SCHOOL ADMINISTRATORS, AND GRADUATE STUDENTS OF EDUCATION AS VOLUNTEER PARTICIPANTS, TWO EXPERIMENTAL GROUPS GIVEN…

The study of ability factors in young children has passed the stage of demonstrating that separate factors exist, the effort now being devoted to systematic identification of measurable abilities. This study was designed to confirm some of the tentative abilities demonstrated in other studies and to extend the exploration into memory processes and…

The effects of the violation of the assumption of normality coupled with the condition of multicollinearity upon the outcome of testing the hypothesis Beta equals zero in the two-predictor regression equation is investigated. A monte carlo approach was utilized in which three differenct distributions were sampled for two sample sizes over…

The technique originating from the study of ecological systems for the examination of dynamic educational systems over time is utilized. The technique is based on the theory of energy exchanges in interactions between variables. Using this technique, interactions among variables can be specified and simulated over time using an analog computer.…

Action research combines the development of competence with community action. It provides a means of organizing large numbers of people around well-defined, short-term jobs; engages people face to face with a problem; and translates research into politics by building a base of mass support for a given problem. The basic components of any action…

Following an analysis of work in the area of relationships between concept development and social development, a preliminary research project carried out to examine these relationships is discussed. Piaget's "The Language and Thought of the Child" served as a springboard for the past and present investigations. In the experiment…