Language acquisition can be truly atypical in autism: Beyond joint attention.

This review looked at how children with autism learn language and whether joint attention (sharing focus with others) is always necessary. While joint attention helps with early language skills, some autistic children can develop language without strong joint attention abilities. The researchers suggest that language development in autism might follow different pathways than typical development, rather than just being delayed. This means there may be multiple ways autistic children can successfully learn to communicate.

This systematic review of 71 studies examines the relationship between joint attention and language development in autism. The review found that joint attention is pivotal for early language emergence but may not be necessary for advanced language skills. Some autistic children appear to acquire language independently of joint attention abilities. The authors challenge traditional models that view autistic language development as simply delayed typical development, proposing instead that language acquisition in autism can follow truly atypical pathways.

The review emphasizes the variable nature of language profiles in autism and suggests research should focus on understanding these unique developmental patterns rather than viewing them as deficits.

Clinicians should consider multiple pathways for language development in autism beyond joint attention. Assessment should identify individual language learning patterns. Intervention approaches may need to be tailored to different developmental profiles rather than assuming all autistic children follow the same language acquisition pathway.

The abstract does not provide details about methodological quality assessment, specific sample characteristics, or effect sizes. The authors note that some included studies had heterogeneous samples or lacked control for non-verbal cognition, which may affect conclusions.

Language profiles in autism are variable and atypical, with frequent speech onset delays, but also, in some cases, unusually steep growth of structural language skills. Joint attention is often seen as a major predictor of language in autism, even though low joint attention is a core characteristic of autism, independent of language levels. In this systematic review of 71 studies, we ask whether, in autism, joint attention predicts advanced or only early language skills, and whether it may be independent of language outcomes. We consider only conservative estimates, and flag studies that include heterogenous samples or no control for non-verbal cognition.

Our review suggests that joint attention plays a pivotal role for the emergence of language, but is also consistent with the idea that some autistic children may acquire language independently of joint attention skills. We propose that language in autism should not necessarily be modelled as a quantitative or chronological deviation from typical language development, and outline directions to bring autistic individuals' atypicality within the focus of scientific inquiry.