A study examined the effects of verbal and perceptual dimensions of individual differences in relation to the efficacy of two different kinds of modeling procedures in the acquisition of a teaching skill (analytic questioning). Aptitude tests for cognitive factors plus specially developed audiovisual tests were administered to 121 intern teachers…

Studied the effects of aptitude variables on learning from programed science material preceded by three differently structured advance organizers. Concluded that the structural properties could benefit low ability fourth-grade students in developing an adequate conceptual scheme for organizing material. (CC)

Investigates whether placement of pictorial adjuncts before or after related textual material enhances instructional effectiveness for learners of varying ability. Junior high students (N=84) were randomly assigned to one or three treatments in which a diagram of the hydrologic cycle was inserted before, after, or omitted from the text. (CS)