Effects of arm-splint rigidity on self-injury and adaptive behavior.

Two children with autism hit their own heads. The team wanted to know how stiff their arm splints should be.

They tried soft, medium, and hard splints in quick five-minute turns. Staff counted self-hits and how often each child followed instructions.

One child needed only the soft splint. The other needed the hard one. Both kids worked more and hit less when the right stiffness was used.

The whole test took under 30 minutes and showed the least-restrictive splint that still kept each child safe.

Steege et al. (1989) did the same idea first. They used brief tests to pick micro-switches instead of splints. Both studies show you can test fast and then treat.

Jarrold et al. (1994) slowly faded restraints while teaching new skills. Perez et al. (2015) skip the fade and just pick the best splint right away. The new way is quicker but still keeps safety first.

Laureano et al. (2024) moved past splints completely. They taught a preschooler to ask for breaks instead of hitting. Their work shows splints can be a bridge until communication is taught.

You can copy the five-minute rigidity test in your clinic this week. Run soft, medium, and hard splints back-to-back. Track SIB and compliance. Stop when you see the least stiff splint that works. Write that setting in the BIP and share it with parents and teachers. The child stays safe while you plan longer-term skills like FCT.