The researchers in this study looked at the nature of communication skills in individuals with Cornelia de Lange syndrome (CdLS). The research team used the Pre-verbal Communication Schedule to evaluate communication skills in 14 individuals with CdLS, aged five to 14 years.
They also identified a contrast group of 14 individuals with Cri du Chat syndrome (CdCS) matched for age and intellectual ability.
They found a significant difference in understanding non-vocal communication. The group with Cornelia de Lange syndrome showed greater deficit. The authors suggest that these findings might indicates a syndrome-specific deficit in understanding non-verbal communication with a dissociation between processing of verbal and non-verbal communication.
Further refinement of the nature of the communication impairment in Cornelia de Lange syndrome, Hoddell J et al., in Advances in Mental Health and Intellectual Disabilities. 5. 4. 15-25