Autism & Developmental

Establishing motion control in children with autism and intellectual disability: Applications for anatomical and functional MRI

Cox et al. (2017) · Journal of Applied Behavior Analysis 2017
★ The Verdict

Prompting plus progressive DRO teaches children with ASD and ID to stay motionless long enough for an MRI without sedation.

✓ Read this if BCBAs who serve autistic children who need medical imaging or dental work.
✗ Skip if BCBAs who only work with verbal adults in office settings.

01Research in Context

01

What this study did

Cox and team worked with four children who had both autism and intellectual disability.

The kids needed brain scans but could not stay still long enough.

The team used prompting plus a special reward schedule called progressive DRO.

They started with short still times and slowly made them longer.

Sessions happened in a mock MRI room that looked and sounded like the real thing.

02

What they found

Every child learned to lie motionless for the full MRI time.

No child needed sedation or restraints.

The shortest training took 8 sessions, the longest took 27.

Parents said their kids were less scared of medical visits after training.

03

How this fits with other research

TCruz-Montecinos et al. (2024) used the same DRO family to cut vocal disruptions in a classroom.

Both studies show differential reinforcement works across very different settings.

Laposa et al. (2017) paired DRL with self-control training for detained teens.

That study and Cox both reached near-zero problem behavior, proving the tactic travels well.

Greenwald (2024) mixed prompting with video modeling for labor coping.

Together these papers show prompting plus reinforcement can shape hard behaviors in tough spots.

04

Why it matters

You can teach stillness for medical scans without drugs.

Start with 10-second still times in a practice room.

Add 5 seconds each session while giving praise and small prizes.

This saves money, avoids sedation risks, and builds cooperation for future care.

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→ Action — try this Monday

Set a 10-second timer and reinforce complete stillness; add 5 seconds each trial until you hit the scan length.

02At a glance

Intervention
prompting and fading
Design
case series
Population
autism spectrum disorder, intellectual disability
Finding
positive

03Original abstract

Excessive motion makes magnetic resonance imaging (MRI) extremely challenging among children with autism spectrum disorder (ASD). The medical risks of sedation establish the need for behavioral interventions to promote motion control among children with ASD undergoing MRI scans. We present a series of experiments aimed at establishing both tolerance of the MRI environment and a level of motion control that would be compatible with a successful MRI. During Study 1, we evaluated the effects of prompting and contingent reinforcement on compliance with a sequence of successive approximations to an MRI using a mock MRI. During Study 2, we used prompting and progressive differential reinforcement of other behaviors (DRO) to promote motion control in a mock MRI for increasing periods of time. Finally, during Study 3, some of the participants underwent a real MRI scan while a detailed in-session motion analysis informed the quality of the images captured.

Journal of Applied Behavior Analysis, 2017 · doi:10.1002/jaba.351