Autism & Developmental

Promoting independent ambulation: A case study of an elementary school student with developmental disabilities.

O'Handley et al. (2016) · Research in developmental disabilities 2016
★ The Verdict

Forward chaining with a slowly rising distance goal can teach a child with developmental disabilities to walk with a support walker and keep the skill.

✓ Read this if BCBAs in public schools who write adaptive PE or mobility goals for students with multiple disabilities.
✗ Skip if Clinicians focused only on verbal behavior or home-based early intervention.

01Research in Context

01

What this study did

One elementary student with developmental disabilities could not walk alone.

The team taught four walker-use steps one at a time with forward chaining.

Each week the distance goal moved a little farther, a design called changing criterion.

02

What they found

The child learned every step and walked longer halls as the goal inched up.

Two months later the student still used the walker and walked farther than at the start.

03

How this fits with other research

Nabeyama et al. (2010) also raised walking distance in school, but they trained staff guarding moves instead of teaching the child.

Buskist et al. (1988) used constant time-delay to chain kitchen skills in older students and saw strong maintenance, showing different prompting styles still work for chains.

Shih et al. (2014) boosted walking with a dance pad and music, proving tech rewards can help, yet chaining gives a step-by-step road map when the walker itself is new.

04

Why it matters

You can copy this low-tech plan tomorrow: list each walker step, teach the first step to mastery, then add the next while slowly stretching the distance goal.

It needs no extra gear and fits inside the school day.

Try filming the weekly criterion line on the floor so the student sees progress and you keep goals transparent.

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→ Action — try this Monday

Tape four floor markers showing the next longer distance cue and reinforce each new walker step before the child moves to the next marker.

02At a glance

Intervention
chaining
Design
changing criterion
Sample size
1
Population
developmental delay
Finding
positive
Magnitude
large

03Original abstract

The limited independent ambulation of individuals with developmental disabilities may be improved with the utilization of support walker devices. In the present study, a forward chaining procedure with an embedded changing criterion component was used to teach an elementary school student with multiple disabilities to acquire and maintain the skills needed to use his walker device successfully, and to increase his total distance walked while using his walker device. Results indicated that the student quickly acquired three of the four requisite steps necessary to use the walker device, but eventually acquired all four steps after procedural modifications. After mastering the four steps, the student gradually increased his total distance walked. Results were maintained when assessed two months post-intervention. Limitations and directions for future research are discussed.

Research in developmental disabilities, 2016 · doi:10.1016/j.ridd.2016.05.008