Further evaluation of the role of protective equipment in the functional analysis of self-injurious behavior.

The team ran a regular functional analysis on one child who hit her head hard.

They repeated the same test while she wore a soft helmet and padded gloves.

Each condition lasted 5 minutes and they counted every head-hit.

With pads on, the girl almost stopped hitting herself.

The behavior looked like it happened for attention, but only when she was padded.

Without pads, the same test showed the hits were really to escape work.

The safety gear had hidden the true reason for the self-injury.

Frank-Crawford et al. (2018) also warn that small test changes can fool you.

They showed high-preference items may stop working once work gets hard, so always recheck under real conditions.

Lance et al. (2014) found that simply seeing a reinforcer during extinction can change resurgence; together these papers remind us that tiny setup details sway results.

Moya et al. (2022) reviewed 21 component studies and found half needed the full package; our 2002 paper is an early example of why you must test without extra parts like helmets.

If you pad a client during an FA you may pick the wrong treatment.

Run the analysis without helmets, arm splints, or thick clothing first.

If safety truly requires gear, remove it later and rerun the test so the function stays clear.