Characterizing associations between emotion dysregulation, anxiety, and repetitive behaviors in autistic youth with intellectual disability.
In non-speaking autistic youth with ID, elevated anxiety is tied to more intense repetitive and self-injurious behaviors, so assess and treat anxiety as a potential driver.
01Research in Context
What this study did
Soto et al. (2024) asked a simple question: does anxiety make repetitive and self-harming behaviors worse in autistic youth who also have intellectual disability?
They looked at kids who do not use speech. Caregivers filled out rating scales for anxiety, emotion control, and four kinds of repetitive behaviors.
The team ran numbers to see which feelings predicted which behaviors.
What they found
Higher anxiety went hand-in-hand with more intense rocking, hand-flapping, self-hitting, and narrow interests.
Emotion meltdowns only predicted unusual interests, not the other behaviors.
Non-speaking youth showed the strongest link between anxiety and body-focused repetition.
How this fits with other research
AHand et al. (2020) proved the idea can work in practice: treating one non-speaking teen’s anxiety cut his self-biting in half.
Aponte et al. (2025) found the same anxiety-repetition link in verbally-able adults, showing the pattern lasts across the lifespan.
Taylor et al. (2017) looked like they disagreed; they saw repetitive behaviors predict later anxiety only until they counted starting anxiety. The clash fades when you notice they studied talking kids without ID, while F et al. studied non-speaking kids with ID—different groups, different drivers.
Why it matters
If a client hits herself, flaps, or lines toys, screen for anxiety even if she can’t say “I’m worried.” Treating anxiety—through visuals, sensory breaks, or meds—may calm the behavior itself. Start with a simple fear checklist filled by staff or parents; act on what you learn.
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02At a glance
03Original abstract
There is a paucity of research that explores associations between emotion dysregulation and the expression and severity of core and co-occurring characteristics of autism spectrum disorder (ASD), especially in autistic youth with co-occurring intellectual disability (ID). This study explored the interplay between developmental characteristics and emotion dysregulation, anxiety, and specific subtypes of RRBs that are elevated in autistic youth with co-occurring ID. Generalized additive models demonstrated that age, sex, language level, dysregulation, and anxiety showed unique patterns of association with subtypes of RRBs in a sample of 150 autistic youth with co-occurring ID who are non-speaking or minimally verbal. More specifically, higher anxiety levels were significantly associated with elevations in repetitive sensory motor behaviors (RSMB), self-injurious behaviors (SIB), insistence on sameness (IS), and unusual interests (UI). While emotion dysregulation was a significant predictor of UI, it demonstrated positive, albeit not significant, associations with the intensity of SIB and RSMB. Language level was a significant predictor of RSMB, such that the intensity of RSMB was higher for individuals who were non-speaking relative to those who spoke in single words. These findings provide preliminary insights into patterns of associations between emotion dysregulation, anxiety, and specific subdomains of RRBs in autistic youth with ID.
Autism research : official journal of the International Society for Autism Research, 2024 · doi:10.1111/j.1467-9868.2010.00749.x