The effect of noncontingent sensory reinforcement, contingent sensory reinforcement, and response interruption on stereotypical and self-injurious behavior.

The team tested three ways to calm stereotypy and self-harm in children with developmental delay.

They gave sensory toys noncontingently, gave the same toys only after the child worked, or gave toys plus a quick stop cue when stereotypy started.

Each child served as their own control in a single-case design.

Free toys cut both stereotypy and SIB right away.

Adding a quick stop cue after the child earned the toy gave even bigger drops.

The stop cue alone, without the toy, was not tested.

Baranek et al. (2005) later pooled many studies and agreed: automatic reinforcement keeps stereotypy alive, and brief fixes like free toys or brief stops work short-term.

Gould et al. (2019) kept only the stop cue part, now called RIRD, and showed it still works two decades later.

Saini et al. (2015) refined the cue to just one quick prompt, saving time with the same payoff.

DeRosa et al. (2019) seemed to disagree: response blocking beat RIRD when you count the whole session. The clash fades once you see they measured extra implementation minutes, not just treatment time.

You can start sessions tomorrow by handing a sensory toy before work starts; it often halves stereotypy without any extra effort. If the behavior still blocks learning, add one calm “hands down” cue and keep the toy flowing. The 1997 recipe still works, and later papers only trimmed the steps, not the idea.