Effects of music on vocal stereotypy and task engagement.

Individuals with autism spectrum disorder commonly exhibit vocal stereotypy, and this behavior may be targeted for treatment when it competes with daily tasks, disrupts the environment, or leads to reduced independence. Previous research has shown that access to music reduces vocal stereotypy. However, treatment evaluations typically occur during play or low-stimulation conditions; therefore, the effectiveness and compatibility of music with daily tasks are less known. We measured levels of vocal stereotypy and on-task behavior during independent activities for three participants. Using a reversal design, we evaluated the effects of music played via headphones on dependent measures. We extended the analysis to typical classroom activities and conducted treatment preference assessments. The results indicated that access to music reduced vocal stereotypy across multiple settings and activities. Additionally, increases in on-task behavior were observed for two of three participants. All participants preferred to engage with tasks while listening to music.