Multimodal Communication in Children with Autism Spectrum Disorder and Different Linguistic Development.

This study focuses on the multimodal communication of children with autism spectrum disorders (ASD) compared to typically developing (TD) children. Eleven children with ASD (aged from 28 to 79 months) and 11 TD children (from 12 to 30 months) were matched by their productive vocabulary. We observed their communicative production in a semi-structured play situation. Results showed no differences in the combinations of gestural and vocal elements between children with ASD and TD. By contrast, regarding the production of the three-element multimodal combinations, we found a different pattern between ASD and TD children depending on their lexical development. These results provide clues to understand some controversial findings regarding multimodal production of people with ASD described in the literature.