Clinical application of a high-probability sequence to promote compliance with vocal imitation in a child with autism spectrum disorder

The current study aimed to evaluate the effects of the high-probability (high- p ) instructional procedure involving motor imitation on the levels of compliance with vocal imitation in a 3-year-old boy with autism spectrum disorder (ASD). We used a multiple-baseline design across three stimuli sets to demonstrate effects of the procedure over compliance with vocal imitation responses. Results demonstrated that the high- p  procedural sequence was effective in increasing the levels of compliance with vocal imitation. We discuss these finding in terms of the operant mechanisms and clinical applications of increased compliance.