Assessment & Research

A systematic review of action imitation in autistic spectrum disorder.

Williams et al. (2004) · Journal of autism and developmental disorders 2004
★ The Verdict

Imitation trouble in autism is a mapping glitch, not defiance—teach the map, not just the move.

✓ Read this if BCBAs teaching imitation to children or adults with autism in clinic or classroom.
✗ Skip if Practitioners focused only on vocal or rule-governed behavior.

01Research in Context

01

What this study did

The team looked at every paper that tested imitation in children with autism.

They compared scores on copy-cat tasks with scores of typically developing kids.

The review covered many ages and many kinds of imitation, not just one test.

02

What they found

Children with autism did worse on almost every imitation task.

The gap was biggest when the task asked for quick, exact copying.

The authors say the problem is in wiring the seen action to the body move, not in laziness or poor attention.

03

How this fits with other research

Schunke et al. (2016) later saw the same slow copying in adults, proving the issue can last across life.

Sowden et al. (2016) seemed to disagree: adults with autism copied fine when the action popped up by itself. The key difference is automatic versus on-demand imitation; the review studied the on-demand kind, so both papers can be true.

Boudreau et al. (2015) turned the deficit into a fix: adding a mirror while teaching gross motor moves helped a toddler learn faster, showing you can train the sensory-motor link.

04

Why it matters

Stop asking kids to “watch and do” without extra help. First give clear models, slow the pace, and add prompts like mirrors or video clips. Check that the child can map the seen move onto their own body before you call a lack of copying non-compliance.

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Place a mirror next to you while you model a gross motor action so the client sees both you and their own body.

02At a glance

Intervention
not applicable
Design
systematic review
Sample size
281
Population
autism spectrum disorder
Finding
negative

03Original abstract

Imitative deficits have been associated with autistic spectrum disorder (ASD) for many years, most recently through more robust methodologies. A fresh, systematic review of the significance, characteristics, and underlying mechanism of the association is therefore warranted. From 121 candidates, we focused on 21 well-controlled studies involving 281 cases of ASD. Overall, children with ASD performed worse on imitative tasks (Combined Logit p value < .00005). The emerging picture is of delayed development in imitation, implicating a deficit in mapping neural codings for actions between sensory and motor modalities, rather than in motivation or executive function. We hypothesise that ASD is characterised by abnormal development of these mappings. such that they are biased towards object-oriented tasks at the expense of those required for action imitation per se.

Journal of autism and developmental disorders, 2004 · doi:10.1023/b:jadd.0000029551.56735.3a