Teacher effectiveness was defined by students' mathematics score on the Iowa Test of Basic Skills while achievement was measured by the Cognitive Abilities Test. Relatively effective teachers generally produced achievement gains from all aptitude levels. Similarly, relatively ineffective teachers did not disproportionately depress achievement for…

The effects of college environments on student achievement as measured by the three Graduate Record Examinations Area Tests were studied when the initial ability of students was controlled. (CK)

Three aptitude factor scores for each of 2,985 college bound urban high school seniors were used to compare patterns and levels of performance by sex and ethnic group membership. Significant differences in levels of performance between Blacks, Hispanics, Caucasian Jewish, and Caucasian Gentile were found on factors labeled Verbal, Reasoning, and…

This study examined the effect of the ratio of high-aptitude to low-aptitude students in a classroom upon mathematics achievement. The hypothesis tested was that both high- and low-aptitude students in "more favorable" classrooms would outperform similar students in "less favorable" classrooms. (Author/GK)

As hypothesized, less advanced students benefited most from a high instructional support treatment (personalized system of instruction) used in an introductory calculus course. Furthermore, as level of prior mathematics preparation increased, the achievement differences between the high and low instructional support (lecture) decreased. (Author/CP)

According to confluence theory, a child is helped or hindered in intellectual development according to the average absolute intelligence (mental age) in the family when the child is born. An analysis of test scores, family information, and socioeconomic data of 36,000 college applicants in Colombia failed to support this theory. (Author/CP)

Eight teaching treatments which varied structuring, soliciting and reacting behaviors were utilized in ecology lessons for 399 sixth-grade students. Analysis of multiple choice, attitude and perception of teaching variables showed aptitudes to be major predictors of teacher, treatment and aptitude-treatment interaction effects. Changes are…

This study investigated the interactive effects on performance and motivation of four motivational aptitudes and two cognitive aptitudes with a choice versus no-choice treatment manipulation in grades 4-5. Three sets of simple regression results highlighted the differential effects of treatment on individuals versus classes. (Author/RL)

The invariance of a multidimensional, hierarchical self-concept structure for adolescent males and females was studied using 412 male and 420 female 11th and 12th graders. Significant gender differences were found in general, academic, English, and mathematics self-concepts. (TJH)

Treatment and aptitude-treatment interaction (ATI) effects were assessed on grade 3 student self-appraisal data relating to self-esteem, attitude, anxiety, and locus of control. In particular, parent instruction in learning skills resulted in significantly higher average scores on student self-esteem and attitude and lower scores on anxiety.…