Functional analysis and treatment of problem behavior exhibited by children with fragile X syndrome.
A short FA plus one matched communication response slashed severe behavior by a large share in kids with fragile X and the fix traveled to home, school, and the grocery store.
01Research in Context
What this study did
Nine children with fragile X syndrome took part. All showed severe hitting, kicking, or self-injury.
Trainers first ran a short functional analysis in a clinic room. They tested if the behavior was fed by attention, escape, or tangible items.
Next they taught each child a simple communicative response that gave the same pay-off. Sessions moved to home, school, and the grocery store to check if the fix stuck.
What they found
Problem behavior dropped a large share on average once the new response worked.
Gains showed up everywhere: at the kitchen table, on the playground, and in the supermarket line.
How this fits with other research
Spackman et al. (2025) got the same kind of win through a laptop screen. Caregivers coached over Zoom ran the same FA+FCT steps and hit an a large share cut in kids with autism. The lower number is still big; it just shows telehealth can carry the model beyond the clinic.
Porter et al. (2008) took a softer road. They treated early, mild warning signs instead of full-blown aggression. Their precursor plan also worked, proving you can step in earlier and still succeed.
Perry et al. (2024) flipped the agent. Parents, not clinicians, ran the plan at home and three-quarters of families met their goals. The 2015 clinic numbers are higher, but the parent-run version keeps the same function-based heart and still beats baseline.
Why it matters
You now have a clear recipe for fragile X: quick FA, one functional communication response, practice in every real-life spot. If travel is tough, borrow the telehealth or parent-coaching tweaks from the newer papers. Either way, start with the function, teach the replacement, and take it on the road.
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02At a glance
03Original abstract
The efficacy of function-based interventions for the treatment of severe problem behavior exhibited by individuals with intellectual and developmental disabilities (IDD) is well established. However, few studies have reported on behavioral interventions in fragile X syndrome (FXS) specifically. The present study is a consecutive case-series analysis that reports on functional analysis and treatment of problem behavior of nine children with FXS. Assessment findings were consistent with previous research indicating that among individuals with FXS, problem behavior is more commonly maintained by escape from demands and access to tangible items, relative to the broader population of individuals with IDD. Functional analysis-based behavioral interventions resulted in a mean reduction in problem behavior of 95.2% across the nine participants. Additionally, generalization of treatment effects from controlled clinical settings to home, school, and community was demonstrated. The current findings suggest that function-based behavioral interventions shown to be effective with the broader population of individuals with IDD are also effective for individuals with FXS. Our results in combination with those of previous studies describing functional analysis outcomes provide additional evidence for a unique functional behavioral phenotype for severe problem behavior in individuals with FXS. Implications of study findings for early intervention and prevention of problem behavior in children with FXS are discussed.
Research in developmental disabilities, 2015 · doi:10.1016/j.ridd.2015.06.010