Treatment of automatically reinforced object mouthing with noncontingent reinforcement and response blocking: experimental analysis and social validation.

A child with autism kept putting toys in his mouth. The behavior happened for the feeling inside his mouth, not for attention or escape.

First the team tried two single fixes. They gave the boy a chew toy any time he wanted. They also blocked his hand when he reached for other objects. Each plan failed on its own.

Next they paired the fixes. The child got a chew necklace every few minutes while staff also blocked unsafe mouthing. They watched the behavior across days and settings.

The combo worked fast. Mouthing of unsafe objects dropped to near zero at school and at home. The boy kept using the chew necklace instead.

Parents and teachers said the change looked good and felt easy to keep up.

Saini et al. (2016) ran the same test 14 years later. They saw the same pattern: NCR plus blocking beat either part alone. This direct replication boosts our trust in the package.

Capio et al. (2013) stretched the idea to 14 kids in a home. They started with NCR only and added blocking later if needed. Most kids stopped hand mouthing with the stepped plan. Their work shows you can start simple and still win.

MShawler et al. (2021) used the same pair to stop mask pulling in kids with IDD. Again, blocking plus NCR worked when each piece had failed. The combo travels across topographies.

If you face automatic mouthing, do not stay stuck on single tools. Run a quick probe: give free access to a safe chew and block the unsafe reach at the same time. One child, one afternoon may tell you if the pair works. If it does, train the team and send the chew item home. You could see full-day drops by next week.