This study compared no-no prompting procedures to simultaneous prompting procedures for 3 children with autism. Using a parallel treatments design, researchers taught rote math skills, receptive labels, or answers to "wh-" questions with both prompting systems. Results indicated that no-no prompting was effective in teaching all skills. By contrast, simultaneous prompting was effective in teaching only one pair of skills to 1 participant in the same amount of teaching time and trials. Researchers conducted a preference assessment to determine which of the two prompting procedures the 3 participants preferred. The participants showed mixed preferences. (Contains 1 table and 3 figures.)