Later Age of Autism Diagnosis in Children with Multiple Co-Occurring Psychiatric Disorders.
The nine-item NIAS cleanly separates autistic adults with eating problems from those without, giving you a fast ARFID screen.
01Research in Context
What this study did
Researchers tested a nine-question eating screen called NIAS. They gave it to 120 autistic adults and 120 non-autistic adults.
Each person filled out the form on their own. The team then checked if scores lined up with real eating problems.
What they found
Autistic adults scored higher on every NIAS subscale. The gaps were medium-sized and statistically clear.
The three subscales are picky eating, low appetite, and fear of eating. All three flagged more trouble in the autism group.
How this fits with other research
Hedley et al. (2023) did the same kind of work. They built a suicide screen for autistic adults and also found clean group differences. Both papers show new tools can be trusted in this population.
Xue et al. (2024) and Capio et al. (2013) ran similar cross-group checks. One tested a psychosexual survey, the other a social-skills role play. Each tool worked, backing the idea that autism-specific tweaks make measures stronger.
Lecavalier et al. (2004) and Shire et al. (2019) looked at kids, not adults. They validated the NCBRF and FYI for youth with ASD. The new NIAS fills the adult gap in that same tool family.
Why it matters
You now have a quick, nine-item way to spot ARFID traits in adult clients. No interview needed; the form takes two minutes. Use it during intake to see who needs a full feeding assessment or referral to a dietitian.
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02At a glance
03Original abstract
Research suggests a higher prevalence of avoidant/restrictive food intake disorder (ARFID) in autistic people across the lifespan compared to the general population. However, ARFID symptoms in autistic people may be misattributed to core autistic traits and gastrointestinal symptoms that often co-occur with autism. This diagnostic overshadowing could lead to the under-recognition and under-treatment of modifiable symptoms of psychopathology in autistic people. Validating ARFID symptom measures in this population is essential to screening for ARFID and tracking treatment outcomes in this population. Multigroup confirmatory factor analysis was used to evaluate the equivalence of the factor structure, factor loadings, and item intercepts of the Nine-Item ARFID Screen (NIAS) between a sample of autistic adults (n = 248) who self-disclosed their diagnosis and a comparison general sample (n = 398). There was support for strong measurement invariance (configural, metric, and scalar) on the NIAS. Autistic adults scored significantly higher on each of the three subscales: selective eating (d = 0.54), appetite impairment (d = 0.27), and fear-driven avoidance of eating (d = 0.37). The NIAS is a valid instrument for measuring ARFID symptomatology in autistic adults. Autistic adults experience elevated symptomatology across all three ARFID eating restrictions. Future research should address whether evidence-based ARFID treatments are efficacious for autistic adults or need to be modified.
Journal of autism and developmental disorders, 2025 · doi:10.1016/j.neuron.2018.01.015