Stereotypy in young children with autism and typically developing children.
Expect lots of stereotypy in preschoolers with autism, but know short exercise, singing, or toy pairing can cut it fast.
01Research in Context
What this study did
MacDonald et al. (2007) watched preschoolers with autism and same-age typical kids. They timed how long each child did repetitive body movements or object play.
The study ran a simple side-by-side comparison. No treatment was given; the team just measured who did more stereotypy.
What they found
Kids with autism spent more time in stereotypy than their peers. The gap was biggest for the 3- and 4-year-olds.
Typical children rarely did these behaviors. Children with autism showed them often and for longer stretches.
How this fits with other research
Smith et al. (1997) saw the same age pattern for social skills. They found typical preschoolers hit social milestones that kids with autism missed, but no extra gap after age three. Rebecca’s team now shows the gap keeps widening for stereotypy, not social skills.
Li et al. (2025) and Wilson et al. (2020) give us tools to close that gap. Li used response-stimulus pairing to cut stereotypy and boost toy play. Thomas showed that letting kids sing in a group halved vocal stereotypy. Both studies took the high levels Rebecca found and proved they can drop with simple ABA moves.
Goldman et al. (2021) add another easy tactic: one to fifteen minutes of running or jumping lowered stereotypy in most children. Together these papers turn Rebecca’s warning into an action plan.
Why it matters
If you write programs for 3- to 4-year-olds with autism, plan for extra stereotypy up front. Use the quick wins proven later: brief exercise, singing, or pairing toys with praise. Start baseline data early; the behaviors you see are normal for the diagnosis but ready to change.
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02At a glance
03Original abstract
Although stereotypy is one of the key diagnostic features of autism, few studies have compared stereotypic behavior in children with autism and typically developing children. The present study employed direct observational measurement methods to assess levels of stereotypic behavior in 2-, 3- and 4-year-old children with autism or pervasive developmental disorder - not otherwise specified (PDD-NOS) and age-matched typically developing peers. Thirty children with autism or PDD-NOS and 30 typically developing children participated. Each child's performance of several early learning and play skills was assessed using a direct observational assessment protocol developed for children with autism who were entering early intensive behavioral treatment. Duration of episodes of vocal and motor stereotypy was recorded from a videotaped 10 min portion of that assessment session. Results indicated that the 2-year-old children with autism or PDD-NOS had somewhat higher levels of stereotypic behavior than the typically developing 2-year-olds, while the 3- and 4-year-old children with autism or PDD-NOS displayed substantially higher levels stereotypic behavior than their same-age peers.
Research in developmental disabilities, 2007 · doi:10.1016/j.ridd.2006.01.004