Identifies promising areas of aptitude-treatment interaction research (ATI), including research related to general ability, anxiety, prior achievement, and achievement motivation. Also provides general methodological ATI guidelines for science educators. (JN)

This study explores the use of cues and their possible interaction with learner ability in concept formation under inductive instructional methods. Ninth- and tenth-grade biology students (N=61) were administered a verbal aptitude test, then randomly assigned to one of two inductively presented slide-tape sequences on monocots and dicots. In the…

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)

Reports results of a study exploring the effects of preservice secondary teacher anxiety and modeling on acquisition of a science teaching skill and concomitant student performance, using randomly assigned microteaching sessions as treatment and control groups. Discusses results and aptitude-treatment interactions. (CS)