Developmental Language Disorder (DLD) and Autism Spectrum Disorder (ASD): similarities in pragmatic language abilities. A systematic review

Abstract

Objective: Pragmatics can be defined as the appropriate use of language in social interactions. Children with Autism Spectrum Disorder (ASD) and children with Developmental Language Disorder (DLD) exhibit difficulties in pragmatic language (PL), but the nature and sources of these difficulties have not been fully investigated yet. The purpose of this paper is to critically review empirical literature on the PL of children with ASD as compared to that of children with DLD. Materials and methods: Thirteen studies that met established inclusion criteria were identified and reviewed. Results: Children with ASD and children with DLD demonstrated several similarities in PL. However, a lot of differences were observed and mainly children with ASD faced more profound difficulties than children with DLD, while PL may be a distinct marker between the two groups. Conclusion: The differences observed in the language profiles of ASD and DLD show that even if there is an overlap in some domains, the PL abilities of children of both clinical populations are likely to be controlled by different mechanisms and therefore these differences in PL may be considered as a distinguishable feature between the two populations.

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