How language affects social cognition and emotional competence in typical and atypical development: A systematic review.

What is already known on the subject The hierarchical model of Schurz et al. (2021), divide social cognition into three brain constructs: cognitive social cognition (CSC), affective social cognition (ASC) and intermediate social cognition (ISC). They observe a large relationship between language and ISC, a fact that has been corroborated with some other studies. Studies have also found lower linguistic and socio-affective abilities in children with autism and language and communication disorders compared with children with neurotypical development, and large behavioural and neurocognitive overlaps between these disorders (Durrleman et al., 2019; Löytömäki et al., 2019). What this paper adds to existing knowledge This is the first review that relates all linguistic components (narrative, lexicon, morphosyntax, pragmatic and prosody) with the three constructs of social cognition (Cognitive, intermediate and affective). Moreover, it is the first review that studies the socio-linguistic factors comparing autism, developmental language disorder and social communication disorder with each other and with neurotypical development in children aged from 4 to 9 years. What are the potential or actual clinical implications of this work? Understanding how language and social cognition interact with each other in autism spectrum disorder, developmental language disorder and social communication disorder allows us to trace socio-linguistic profiles for each of the studied disorders, understand better children with these difficulties, and, with this, find specific potential intervention points to improve and prevent these difficulties.