An evaluation of the effects of response interruption redirection and matched stimulation on vocal stereotypy

Gibney et al. (2020) compared two ways to quiet vocal stereotypy in autistic children. One group got response interruption redirection (RIRD). The other got noncontingent matched stimulation (NCR-M).

They used an alternating-treatments design. Each child tried both methods in the same room on different days.

Both RIRD and NCR-M cut vocal stereotypy for three of four kids. Two children also used more appropriate words during the day.

No single method won for everyone. You can pick either one and still see less noisy self-talk most of the time.

Gibbs et al. (2018) showed that adding background music to RIRD works even faster and needs fewer interruptions. Gibney kept the comparison clean by testing RIRD alone against matched sounds, so the music boost is extra, not required.

Laugeson et al. (2014) warns that scoring only after you interrupt can make RIRD look stronger than it is. Gibney’s positive results still hold, but the size of the win might shrink if you count every moment, not just post-interruption intervals.

Happel et al. (2025) later moved the idea into classrooms with headphones. Their success backs up Gibney’s matched-stimulation approach and shows the trick works beyond a therapy table.

You now have two easy choices for vocal stereotypy. Use RIRD when you want to teach and reinforce alternate talk. Use NCR-M when you want hands-off, steady background input. Either way, check that you record data across the whole session, not just after redirects, so your graph tells the true story.