Background: Using meta-analytic review techniques, this study synthesized the results of 79 unpublished studies about the nature of transformational school leadership (TSL) and its impact on the school organization, teachers, and students. This corpus of research associates TSL with 11 specific leadership practices. These practices, as a whole,…

The mathematical representation of E. Brunswik's (1952) lens model has been used extensively to study human judgment and provides a unique opportunity to conduct a meta-analysis of studies that covers roughly 5 decades. Specifically, the authors analyzed statistics of the "lens model equation" (L. R. Tucker, 1964) associated with 249 different…

An action theoretic account of skill learning and skill use is offered as a useful heuristic for life-span developmental psychology. The version presented is one that is particularly prominent in industrial psychology in the German-speaking countries. (Author/RH)

This study is a synthesis of practice and research related to use of behavior analysis to train teachers. An idealized model for training science teachers is presented with research related to the model categories reviewed and analyzed. Results (based on meta-analysis) which support the idealized model are presented and discussed. (Author/JN)

Discusses results of a meta-analysis which sought to identify those variables found in research as strongly correlated with responsible environmental behavior. Variables found significant were: knowledge of issues; knowledge of action strategies; locus of control; attitudes; verbal commitment; and sense of responsibility. Proposes a model of…

Focuses on alternative paradigms to experimental inquiry useful to instructional systems researchers, including quasi-experimentation, meta-analysis, case study and ethnography, systems-based evaluation, and technique and model development. Each is discussed in terms of how it generally applies in the field and how it has been employed by…

Both the career model and the decision model have been proposed to explain patterns of contraceptive use in teenagers. The career model views contraceptive use as a symbol of a woman's sexuality and implies a clear decision to be sexually active. The decision model is based on the subjective expected utility (SEU) theory which holds that people…

This examination of the research on computer-based instruction for the major academic subjects in the elementary and secondary grades considers three varieties of empirical data--surveys of computer-using teachers, school district program evaluations, and experimental field studies. A discussion of the findings of two national surveys of…

The quantitative synthesis of 89 correlations from 16 studies of behavioral ratings and classroom observations suggested significant problems in the areas of the construct of behavioral disorder and criterion-related validity of widely used measures of social behavior. A "components of variance" model is proposed to aid in educational decision…

The purpose of this study was to determine the extent to which mastery testing contributes to instructional effectiveness and to determine the size of its effects in different outcome areas, such as aptitude and instructional time. A meta-analytic methodology was used to integrate findings from experimental studies. Twenty studies examined…