Restricted interests and anxiety in children with autism.
Watch kids acting out their special interests in play—it is the strongest sign of anxiety, not just collecting facts.
01Research in Context
What this study did
The team watched 68 elementary kids with high-functioning autism.
They tracked three ways kids used their special interests: collecting facts, time spent, and acting them out in play.
Then they checked which style linked to higher anxiety scores.
What they found
Only one style stood out: kids who acted out their interests in play showed more anxiety.
Collecting facts or simply spending time on the interest did not predict anxiety.
In plain words, pretend play with trains or dinosaurs was the red flag, not memorizing train schedules.
How this fits with other research
Aponte et al. (2025) later found the same anxiety-restricted behavior link in autistic adults.
Adams et al. (2020) showed a large share of autistic kids self-report anxiety, so the behavior you see in play lines up with what kids feel inside.
MacLennan et al. (2020) tied anxiety to sensory issues, reminding us that different autism features can each raise anxiety in their own way.
Together, these papers say anxiety is common and shows up through many channels—play style is just one clear signal to watch.
Why it matters
If a child keeps acting out the same scene with their special toy, do not just smile at the "cute" play.
Pause and screen for anxiety.
A quick check now can stop bigger problems like school refusal later.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Add one question to your session note: "Did the child act out their special interest in play today?" If yes, run a brief anxiety screener.
02At a glance
03Original abstract
A preoccupation with restricted interests (RI) is a core symptom of autism spectrum disorders (ASD). Engagement in RI is commonly observed in this population and impacts social, adaptive, and emotional functioning. The presence of anxiety disorders and overlap in symptom expression with RI, such as obsessive compulsive disorder (OCD), in children with ASD suggests a possible link between anxiety and the RI manifestation. RI play a multidimensional role in ASD and have been described as being expressed in multiple forms, such as fact collection or the enactment of RI through play. However, there is little research exploring in more detail the possible relationship between RI expression and anxiety. To explore the association between RI expression and anxiety, the current study examined the association between the various modes of RI expression and anxiety disorder symptoms in 68 elementary-aged children diagnosed with high-functioning ASD. Findings indicated that symbolic enactment of RI in the form of play, rather than information collection or time engaged in RI, was significantly linked with the increased presence and severity of anxiety symptoms. The conceptualization of RI as possible maladaptive coping responses to negative emotional experiences is discussed.
Autism : the international journal of research and practice, 2012 · doi:10.1177/1362361311401763