This paper discusses the development of an innovative self-contained self-rescuer (scsr) donning method, and assesses the impact of differing instructional strategies used to teach this method. The method is a generic procedure which is applicable to the four scsr models currently being marketed in the United States. It consolidates the procedural tasks into three critical steps and three secondary steps. The "3+3" method has been shown to cut donning times in half, and significantly reduce errors made by trainees. The strategies used to teach this method were a live demonstration, a structured lecture, and a computer-based format. It was found that delivery strategy had a modest initial influence upon how well people did, but that this effect tended to disappear after one initial hands-on experience. It was also noted that a significant amount of skill degradation occurred during the first 3 months following training.