Do Children with Specific Language Impairment have a Cognitive Profile Reminiscent of Autism? A Review of the Literature.

The authors read every paper that compared kids who have Specific Language Impairment (SLI) with kids who have autism.

They looked for shared thinking styles: poor theory of mind, weak social attention, or rigid learning.

No new kids were tested; they simply pooled what others had already published.

Across dozens of studies the two groups did not line up.

SLI children were slow with words but still wanted to chat.

Autistic children showed social and repetitive differences that SLI children lacked.

The overlap story did not hold.

Cohen et al. (1993) already showed a checklist can pull PDD-NOS apart from pure language disorder.

Noterdaeme et al. (2002) found the ADI-R plus ADOS-G together catch almost every case without calling a language kid autistic.

Those older studies match the new review: good tools keep the groups separate.

Narzisi et al. (2013) went further and proved the CBCL 1½-the toddler scales also spot ASD with 90 % accuracy, backing the idea that clear profiles exist if you measure well.

When a child talks late, do not assume autism. Pull out solid screeners like CBCL or ADOS, look for social intent, and save families from the wrong label.