Adults have specific and unique motivational needs in instructional settings. As a result, motivating instruction for adult learners should be designed with special considerations. This paper uses an adult motivational instructional design model to demonstrate the application of prescribed strategies into instructional software designed to teach basic statistics concepts. The ARCS (attention, relevance, confidence, and satisfaction) model for designing motivational strategies is described. For each category, an example is given for incorporating these motivational strategies into computer-based instruction programs. The implications and applications of motivating design of instruction for adults are also discussed. (Contains 20 references.) (Author/JLB)