Increasing on-task behaviour through interruption-prompting.

Five children with autism and intellectual disability kept spinning, flapping, or rocking during work time. The team watched each child for one minute. Every time stereotypy started, the teacher tapped the desk and said, "Do your work." No stickers, no snacks, just that quick prompt.

The study ran an ABAB reversal. First week: no prompts. Second week: prompts every time. Third week: prompts off. Fourth week: prompts back on. They counted how many seconds each child stayed on task.

When the prompt was on, on-task time jumped up for every child. When the prompt stopped, work time dropped right back. The change was big enough to see by eye on the graph.

The team never added extra reinforcers. Simply breaking the stereotypy chain was enough to bring the kids back to the task.

Lang et al. (2009) extends this idea. They let one child play with her stereotypy for five minutes before work. That free time cut later stereotypy and boosted play skills. C et al. interrupt during work; Russell et al. front-load before work. Both lower stereotypy, just at different times.

Hagopian et al. (2000) looks similar but lands mixed. They tried blocking stereotypy and also using it as reinforcement. Blocking alone helped two of three kids; the third only improved when he earned stereotypy breaks. Their data say: try the simple block first; add reinforcers only if needed.

Weiss et al. (2001) took a different road. They sent adults outside or to a Snoezelen room instead of interrupting. Outdoor play cut stereotypy the most. Together these papers show: you can either change the setting or interrupt the behavior—both work, but outdoor fun needs no trial-by-trial watching.

You can run this tactic today. Watch for the first spin or hand-flap. Give a quick, calm cue: "Keep working." No need to set up a token board or open the M&M bag. If the child’s hands are busy with the task, they can’t flap. One prompt, one moment, big pay-off in engagement.