Response interruption and redirection to reduce vocal stereotypy.

Persistent difficulties in social communication and the presence of stereotypical behaviour are amongst the diagnostic criteria for Autism Spectrum Disorder (ASD). Delayed echolalia (a form of vocal stereotypy) is common among individuals with ASD and its presence can limit the student’s ability to access the curriculum and learn appropriate play and social skills. For individuals who engage in vocal stereotypy, developing functional communication skills is an essential element of their individualised education plan.
The aim of this study was to evaluate the effectiveness of Response Interruption and Redirection (RIRD) as a treatment to decrease inappropriate vocalisations. The participants of the study were two males both aged 7 years. Assessment tools employed indicated automatic reinforcement as the primary maintaining variable. An ABAB design was used to evaluate the effects of response interruption and redirection on vocal stereotypy including delayed echolalia. Results of the study showed that RIRD produced a significant reduction in vocal stereotypy across both participants. This outcome provides further support to previous research on the effectiveness of RIRD in reducing vocal stereotypy.