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Strahan, David B.; O'Sullivan, Rita – 1986
The purpose of this study was to examine for the middle grades how students' cognitive reasoning level contributes to the variability of their achievement test performance. While previous investigations have indicated that measures of reasoning development are associated with measures of achievement, few such studies have attempted to control for…
Descriptors: Abstract Reasoning, Academic Achievement, Academic Aptitude, Achievement Tests
Noland, Theresa Koontz; Taylor, Bob L. – 1986
The study reported in this paper quantitatively integrated the recent research findings on ability grouping in order to generalize about these effects on student achievement and student self-concept. Meta-analysis was used to statistically integrate the empirical data. The relationships among various experimental variables including grade level,…
Descriptors: Ability Grouping, Academic Ability, Academic Achievement, Affective Measures