Social and communication abilities and disabilities in higher functioning individuals with autism spectrum disorders: the Vineland and the ADOS.

Klin et al. (2007) looked at higher-functioning boys with autism. All had IQ scores above 70.

They gave two tests: the Vineland Adaptive Behavior Scales and the Autism Diagnostic Observation Schedule. The Vineland asks parents what the child can do every day. The ADOS watches the child play and talk.

The team wanted to see if daily living skills matched autism symptom scores and if age changed the picture.

Big gaps showed up. Vineland scores were much lower than IQ scores. Daily skills did not track with autism severity.

Older boys had lower Vineland scores than younger boys. The gap widened as kids grew.

Paul et al. (2014) extends this downward. Toddlers under two already lag behind peers with other delays. The Vineland gap starts early.

Jain et al. (2025) extends this sideways. Children with Social Communication Disorder score higher than ASD peers on every Vineland domain. The tool now helps tell the two groups apart.

Kraijer (2000) seems to disagree. That review said self-help scores were equal between ASD plus ID and ID-only groups. The key difference: D studied people with both autism and intellectual disability. Ami studied higher-functioning youth. Method and population differ, so both findings can stand.

Do not trust IQ alone. A teen can score 90 and still need help showering or ordering food. Run the Vineland at intake and every year. Watch for falling scores. Add daily-living goals to the treatment plan even for bright clients.