An analysis of Snoezelen equipment to reinforce persons with severe or profound mental retardation.

Matson et al. (2004) watched adults with severe or profound intellectual disability interact with Snoezelen gear.

Bubble tubes, fiber-optic strands, and vibrating cushions were set out one pair at a time.

Staff recorded which item the person approached more often to build a preference list.

The team located clear favorites for every participant.

Preferred pieces were later used as reinforcers in other tasks, though the paper gives no counts or graphs.

Hamilton et al. (1978) and Willemsen-Swinkels et al. (1998) used the same paired-choice method decades earlier with work tasks, showing the procedure itself is solid.

Carter et al. (2020) complicates the story: top-ranked items do not always work best as reinforcers. Their mixed data remind us to test, not trust, the hierarchy.

Mueller et al. (2000) and McAdam et al. (2005) add a tip: withhold similar items 30-60 min before the assessment so satiation does not flatten choices.

You now have a quick, low-cost way to find reinforcers for clients who cannot speak. Run five-minute paired trials with whatever sensory items you own. Then do a brief reinforcer assessment to confirm the top picks actually strengthen behavior.