Utilizing increased response effort to reduce chronic hand mouthing.

The team worked with two adults who had severe intellectual disability. Both people kept putting their hands in their mouths for hours each day.

The researchers placed soft arm splints on each person. The splints made it harder to bend the elbow, so hand-to-mouth movement took more effort.

Sessions happened during normal day-program activities. Staff recorded how often each person mouthed their hand, played with leisure items, and moved their elbow in useful ways.

Hand mouthing dropped sharply when the splints were on. The behavior stayed low as long as the restraints were used.

Free-time play and helpful elbow movements dipped a little while the splints were worn. One person showed a bigger drop in elbow use at follow-up.

Overall, the trade-off was mixed: the target behavior fell, but some adaptive movements also declined.

Rapport et al. (1996) got similar mouthing cuts with a lighter touch. They simply interrupted the behavior for one second and gave a toy. Their method kept play skills steady, while S et al. saw small losses.

Cannella et al. (2006) later reviewed 23 studies and advised starting with sensory toys and fun activities before using any restraints. The review likely includes the 1998 splint data, showing the field’s shift toward milder options.

Garcia et al. (1999) refined restraint use even further. In just 30 minutes they tested lighter-to-heavier sleeves and picked the least restrictive one that still stopped self-injury. Their quick test method can help you copy the 1998 benefit without guessing splint tightness.

If you must block chronic hand mouthing, remember that making the movement harder works, but it can also cut other useful motions. Before you try splints, run a brief graded-restraint check like Garcia et al. (1999) to find the lightest sleeve that still keeps hands out of the mouth. Pair the sleeve with fun sensory toys so the person still gets automatic reinforcement in safer ways. Track play and elbow use each session; if either drops, loosen the restraint or add more reinforcement.