Describes a study to determine effects of computer-assisted instruction (versus a text mode of programed instruction) and locus of control on preservice elementary teachers' computer literacy achievement. Differences in test scores of externally controlled individuals favored CAI. There were no differences between treatments when internally…

This study investigated the effect of reward structure and group ability composition on small group computer-assisted instruction. Junior high school students practiced algebra in mixed-ability or uniform-ability groups, and rewards were based on individual performance, group performance, or a combination of both. (29 references) (Author/LRW)