ABA Fundamentals

Establishing use of crutches by a mentally retarded spina bifida child.

Horner (1971) · Journal of applied behavior analysis 1971
★ The Verdict

Shaping plus prompt fading can teach crutch walking to preschoolers with motor and intellectual disabilities—start with parallel bars and fade in crutches across 10 successive approximations.

✓ Read this if BCBAs helping young kids with ID gain safe mobility.
✗ Skip if Clinicians who only treat verbal behavior or feeding.

01Research in Context

01

What this study did

A team worked with one 5-year-old who had spina bifida and an intellectual disability.

The child could not walk with crutches.

The teachers built a 10-step shaping plan.

They started with parallel bars for balance.

They slowly traded bars for crutches while giving praise and treats for each small success.

02

What they found

The child learned to walk with crutches after the 10 steps.

When the skill dipped later, one quick practice with the bars brought it back.

Shaping plus fading worked for this big motor skill.

03

How this fits with other research

Taub et al. (1994) later used the same shaping idea with stroke adults.

They added a mitt on the good arm to stop learned non-use.

Both studies show shaping can fix very different motor problems.

Ghaemmaghami et al. (2018) used a stepwise plan like the 10-step one, but they shaped words instead of steps.

Same tool, new job.

Almuhtaseb et al. (2014) reviewed gait work in ID and included this 1971 paper.

Their review says ID often brings short, flat steps.

The 1971 study proves you can still teach better walking even with those limits.

04

Why it matters

You can borrow the 10-step plan for any big motor goal.

Break the skill into tiny pieces, start with full support, then fade it out.

Use praise or small treats at each step.

If the skill drops, bring back the last safe setup for one quick trial.

This old paper still gives you a clear Monday-morning map for teaching crutch use, walker use, or even bike riding.

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→ Action — try this Monday

List 10 tiny steps from holding parallel bars to solo crutch steps, pick a reinforcer, and move to the next step only after five correct trials.

02At a glance

Intervention
prompting and fading
Design
single case other
Sample size
1
Population
intellectual disability, other
Finding
positive

03Original abstract

A 5-yr-old mentally retarded spina bifida child was taught to walk with the aid of crutches. This behavior was developed through fading of physical prompting within a 10-step successive approximation sequence. Preliminary training to establish gait consisted of developing use of parallel bars through fading of physically modelled responses within a six-step successive approximation sequence. Use of parallel bars ceased during an extinction period and completely recovered upon being primed with one "free" reinforcement. Systematic use of natural reinforcers was employed as an aid in maintaining use of crutches.

Journal of applied behavior analysis, 1971 · doi:10.1901/jaba.1971.4-183