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The relation between contextually appropriate vocalizations (AV) and vocal stereotypy (VS) has yet to be established within the response interruption and redirection (RIRD) literature. RIRD may promote AV by suppressing VS and/or by functioning as incompatible responses. The occurrence of VS and AV was assessed during baseline, RIRD alone, and RIRD combined with a differential reinforcement system for AV (RIRD + DRI) for a 5-year-old child with autism. Results showed an increase in AV once RIRD was implemented and further increases in AV and decreases in stereotypy when the token system of reinforcement for AV was implemented. Copyright © 2012 John Wiley & Sons, Ltd.