Correlates of DSM-5 Autism Spectrum Disorder Levels of Support Ratings in a Clinical Sample.

The team looked at DSM-5 support-level ratings for a large group of people with autism. They asked: do the three levels really line up with how well the person thinks, talks, and copes with daily life?

They gave everyone IQ tests, adaptive-behavior checklists, and autism-severity scores. Then they compared the numbers to the level the clinician had picked.

Level 1, Level 2, and Level 3 formed clean steps. Higher level meant lower IQ, lower daily-living scores, and higher autism-severity scores.

The ratings mirrored real ability gaps, so a busy clinician can trust the level as a quick snapshot of overall functioning.

de Bildt et al. (2011) and Hus et al. (2014) did the earlier math that lets us compare ADOS scores across age groups. McGarty et al. (2018) now shows those same ADOS numbers line up with the DSM-5 levels, so the pieces click together.

Levin et al. (2014) warned that ADOS, CARS, and SRS often disagree in preschoolers. That clash sounds scary, but McGarty et al. (2018) used a bigger, wider age range and still found orderly steps. The difference is sample width: the 2014 study was small and young; the 2018 study was large and mixed-age.

Uljarević et al. (2020) carved kids into five social subtypes instead of three levels. Both papers want clearer severity pictures; one uses categories, the other uses profiles. You can pick the style that fits your clinic.

When you write “Level 2” in a report, you are telling the next therapist, teacher, or insurer that the client’s IQ, adaptive skills, and autism symptoms sit in the same middle band. No extra tables needed. Use the level to set rough initial goals, then let full assessments guide the details.