The use of response cost to treat spitting by a child with autism

We evaluated the extent to which noncontingent access to one or multiple items and the contingent removal of a specific item decreased a young boy's spitting. Results indicated that the boy's spitting did not decrease when he was given noncontingent access to multiple, alternative stimuli or to a toy radio. By contrast, when the toy radio was removed contingent on spitting, the rate of the boy's spitting decreased to zero or near‐zero levels. Similar results were produced in the boy's special education classroom. Follow‐up sessions conducted 2 and 4 months later indicated that the reduction in the boy's spitting persisted across time. Copyright © 2010 John Wiley & Sons, Ltd.