The utility of assessing musical preference before implementation of noncontingent music to reduce vocal stereotypy.

We conducted a modified paired-choice preference assessment and used a multielement design to examine the effects of noncontingent access to high- and low-preference music on vocal stereotypy exhibited by children with autism. For 3 of the 4 participants, high-preference music (a) produced lower levels of vocal stereotypy than low-preference music and (b) reduced vocal stereotypy when compared to a no-interaction condition. Results underscore the potential importance of assessing musical preference prior to using noncontingent music to reduce vocal stereotypy.