Describes study of undergraduates that examined uses and effects of learner control of the context or theme of practice examples on a computer-based statistics lesson in combination with the number of examples examined. Student attitudes are discussed, and correlations between learner characteristics and task outcomes are examined. (38 references)…

Describes a study of undergraduate students that investigated the effects of two types of learner control and two types of incentives--task-contingent and performance-contingent--on learners' achievement, attitudes, use of options, and time on program using computer-delivered instruction. Implications for instructional design and research are…