| Abstract: | We compared two procedural variations of response cost (RC) of preferred materials to increase mouth clean in a five‐year‐old boy diagnosed with autism. Noncontingent presentation of preferred materials (NCR) was compared to differential reinforcement of alternative behavior (DRA) when returning preferred materials once they have been removed for refusal or expulsion of food. Results indicated that both procedures increased swallowing and reduced problem behavior; however, NCR + RC was superior to DRA + RC with respect to overall mean and initial treatment measures. Copyright © 2005 John Wiley & Sons, Ltd. |
