Research syntheses of individual bivariate studies of the effects of specific predictor variables on student outcomes are considered. Walberg's nine-factor model of educational productivity is used to organize the syntheses and to identify aptitudinal, instructional, and environmental variables linked with student achievement and learning. (TJH)

Meta-analyses of past studies in numerous countries on factors influencing student outcomes are synthesized to examine educational productivity in the learning of science. A systems approach and Walberg's productivity model are used to perform the analyses. (TJH)

This monograph includes chapters on: (1) The Need for Educational Productivity Research; (2) Syntheses of Research on Factors Influencing Learning; (3) Contextual and Transactional Influences on Science Outcomes; (4) Identifying the Salient Facets of a Model of Student Learning: A Synthesis of Meta-Analysis; and (5) Use of National Survey Data in…

Major issues in models of student learning (Carroll's, Bloom's, and Glaser's models) are discussed, and a model that retains the salient features of these models (time, prior learning, and learning processes) is outlined. The final model also addresses other facets having unique effects on achievement and interactions among facets. (TJH)