Studied the relationship of teachers' I/D ratio to their students' achievement and retention of learning in senior high chemistry and junior high general science classes. Concluded that the student score on a standardized achievement test was dependent on the teacher I/D ratio as measured on Flanders scale. (CC)

Predictions from Anderson's theories of structured communication were tested in grade eitht biology classes. Students given verbal instruction with a high degree of structure performed better on acquisition tests than students receiving less structured lessons. (AL)

Investigates the influence of treatment and the interactions between treatments and selected pupil characteristic variables, with respect to pupil achievement and preference for treatment, and examines treatment-teacher interactions. Among the findings, this study suggests that students prefer to operate in less structured modes for the medium or…

Reports on a study of the interactions of students in Australian high schools and was designed to focus on "target students" who monopolized whole class interactions. Students who were asked by teachers to be target students tended to have higher formal reasoning ability and achievement levels than the other students. (TW)