Describes a study of undergraduates that compared the effects of response-certitude adaptive and nonadaptive feedback in a computer-based lesson of verbal information and defined concept tasks. Effects on student performance, feedback-study time, and lesson efficiency are discussed, and implications for future research are suggested. (LRW)

Describes a study that was designed to investigate the interaction between three levels of instructional control (i.e., linear, mixed, and learner) and provision of an orienting activity on college students' learning of factual and procedural knowledge via interactive video. Instructional time and recall of facts and procedures are examined. (35…

Describes a study of ninth graders that investigated the effects of learner and program control over content review in science-related computer-assisted instruction (CAI). Results of posttests, continuing motivation measures, and attitude questions are discussed; and future research is suggested. (35 references) (LRW)