In an effort to build programs to teach cognitive-type material to men of widely differing aptitudes, exploratory work was conducted in military justice, one of the more abstract subjects in basic combat training. Objectives were identified and alternative tape and slide training programs developed--one slow-paced (designed for low-aptitude men), the other fast-paced (for high-aptitude men). The programs differed most in speed of presentation and amount of repetition. One group of trainees attended the slow program, and a comparable group, the fast program; both groups were made up of trainees with a similar distribution of AFQT scores. Both groups were tested immediately after the class to measure recall and again four weeks later for retention. A comparable group of trainees was tested before attending any military justice classes to measure entry-level knowledge. Men at all levels of aptitude learned from the programs and tended to remember what they had learned. The programs did not have differential effectiveness for men of different aptitudes. Whatever their aptitude, the trainees who took the fast program were more favorable to it than trainees who took the slow program were toward it. (The document includes tables and figures, a questionnaire, and an appendix on training objectives.) (author/ly)