ABA Fundamentals

Reducing self-injury and corresponding self-restraint through the strategic use of protective clothing.

Silverman et al. (1984) · Journal of applied behavior analysis 1984
★ The Verdict

A padded helmet and slippers can stop face punching and leg kicking right away, ending the need for self-restraint.

✓ Read this if BCBAs working with self-injury in teens or adults with intellectual disability
✗ Skip if Clinicians whose clients only show mild stereotypy or vocal disruption

01Research in Context

01

What this study did

The team tested padded clothing on a client who hit his own face and held his arms to stop the blows. They tried two looks: helmet only, then helmet plus padded slippers.

Each outfit ran for short blocks while staff counted face punches, leg kicks, and how long the client froze his limbs to block them.

02

What they found

The helmet alone slashed face punching and arm self-restraint almost to zero. Adding the slippers also stopped leg kicking and the leg locking that went with it.

The client stayed calm; no extra drugs or restraints were needed.

03

How this fits with other research

McIntire et al. (1987) used the same fast-switch design with preschool dental patients. They swapped stickers and brief breaks for protective gear and still cut problem behavior below 15%.

Johnston et al. (2002) also used a wearable device—a personal stereo—to ease hallucinations. Both papers show a simple item worn on the body can drop a tough symptom without drugs.

Jason et al. (1985) looked at self-control to stop stuttering relapse. Their focus on self-restraint mirrors K et al.’s finding: once the injury risk is gone, the client no longer needs to hold himself back.

04

Why it matters

If a client’s self-injury is severe and quick, try a padded helmet or slippers first. You may see an instant drop in hits and the self-restraint that goes with them. Then you can shape safer play or teach replacement skills while the clothing keeps everyone safe.

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Fit a soft helmet during the next session and count face hits for ten minutes—look for an instant drop.

02At a glance

Intervention
other
Design
alternating treatments
Sample size
1
Population
intellectual disability
Finding
positive
Magnitude
large

03Original abstract

We examined the use of protective clothing to reduce a retarded male's face-punching and leg-kicking and two corresponding forms of self-restraint--arm and leg self-restraint. The resident was observed each day in three sessions of randomly ordered conditions (one condition per session): without any protective clothing, with a padded helmet, and with a padded helmet and padded slippers. Use of the padded helmet substantially reduced face-punching and arm self-restraint. The addition of padded slippers reduced leg-kicking and leg self-restraint. These results suggest a practical and effective means of controlling self-injury and self-restraint. They are also consistent with the possibility that the resident's arm restraint was maintained in part by escape or avoidance of face-punching and that his leg restraint was maintained in part by escape or avoidance of leg-kicking.

Journal of applied behavior analysis, 1984 · doi:10.1901/jaba.1984.17-545