Assessment of global functioning in adolescents with autism spectrum disorders: utility of the Developmental Disability-Child Global Assessment Scale.

The team tested a short rating scale called the DD-CGAS. It gives one number for overall life skills in teens with autism.

They asked 25 clinicians to score 67 higher-functioning teens. Then they checked if the scores matched core autism signs and IQ.

The teens were in a 12-week social-skills trial, so the team could also see if DD-CGAS picked up real change.

DD-CGAS scores lined up well with ADOS social scores and with each teen’s verbal IQ.

When teens improved on social and behavior measures, their DD-CGAS number went up too.

A single 0-100 rating tracked treatment gains as well as longer tests, saving time.

Tajik-Parvinchi et al. (2023) later showed parents can do the same job. Their ACSF:SC parent ratings also line up with standard measures, but cover instead of just teens.

Spiegel et al. (2023) pushed the DD-CGAS even younger. They linked the same scale to the new ABCS video tool in preschoolers, proving it works across age bands.

Levin et al. (2014) looked at preschoolers and found ADOS, CARS, and SRS often disagree. That clash seems scary, but it’s about different informants. The teen DD-CGAS study avoids that mess by using trained clinicians who see the whole picture.

You now have a one-minute clinician scale that tracks real change in higher-functioning teens. Use it at intake, mid-treatment, and discharge to show parents and funders clear numbers. Pair it with parent tools like ACSF:SC to get both views without extra staff time.